What is "gill"

Gill \Gill\ (g[i^]l), n. [Dan. gi[ae]lle, gelle; akin to Sw. g["a]l, Icel. gj["o]lnar gills; cf. AS. geagl, geahl, jaw.]

1. (Anat.) An organ for aquatic respiration; a branchia.

   Fishes perform respiration under water by the gills.
   --Ray.

   Note: Gills are usually lamellar or filamentous appendages, through which the blood circulates, and in which it is exposed to the action of the air contained in the water. In vertebrates they are appendages of the visceral arches on either side of the neck. In invertebrates they occupy various situations.

2. pl. (Bot.) The radiating, gill-shaped plates forming the under surface of a mushroom.

3. (Zo["o]l.) The fleshy flap that hangs below the beak of a fowl; a wattle.

4. The flesh under or about the chin.
   --Swift.

5. (Spinning) One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments. [Prob. so called from F. aiguilles, needles.
   --Ure.]

   Gill arches, Gill bars. (Anat.) Same as Branchial arches.

   Gill clefts. (Anat.) Same as Branchial clefts. See under Branchial.

   Gill cover, Gill lid. See Operculum.

   Gill frame, or Gill head (Flax Manuf.), a spreader; a machine for subjecting flax to the action of gills.
   --Knight.

   Gill net, a flat net so suspended in the water that its meshes allow the heads of fish to pass, but catch in the gills when they seek to extricate themselves.

   Gill opening, or Gill slit (Anat.), an opening behind and below the head of most fishes, and some amphibians, by which the water from the gills is discharged. In most fishes there is a single opening on each side, but in the sharks and rays there are five, or more, on each side.

   Gill rakes, or Gill rakers (Anat.), horny filaments, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities.

Gill \Gill\, n. [Etymol. uncertain.] A two-wheeled frame for transporting timber. [Prov. Eng.]

Gill \Gill\, n. A leech. [Also gell.] [Scot.]
--Jameison.

Gill \Gill\, n. [Icel. gil.] A woody glen; a narrow valley containing a stream. [Prov. Eng. & Scot.]

Gill \Gill\, n. [OF. gille, gelle, a sort of measure for wine, LL. gillo, gello., Cf. Gallon.] A measure of capacity, containing one fourth of a pint.

Gill \Gill\, n. [Abbrev. from Gillian.]

1. A young woman; a sweetheart; a flirting or wanton girl. ``Each Jack with his Gill.''
   --B. Jonson.

2. (Bot.) The ground ivy ( Nepeta Glechoma); -- called also gill over the ground, and other like names.

3. Malt liquor medicated with ground ivy. Gill ale.

   1. Ale flavored with ground ivy.

   2. (Bot.) Alehoof.

fem. proper name, see Jill.

"organ of breathing in fishes," early 14c., of unknown origin, perhaps from a Scandinavian source, such as Old Norse giolnar which perhaps means "gills;" Old Danish -gæln (in fiske-gæln "fish gill"). Related: Gills.\n

liquid measure (commonly a half-pint), late 13c., from Old French gille, a wine measure, and directly from Medieval Latin gillo "earthenware jar," of uncertain origin.

Etymology 1 n. 1 (context animal anatomy English) A breathing organ of fish and other aquatic animals. 2 (context of a fish English) A gill slit or gill cover. 3 (context mycology English) One of the radial folds on the underside of the cap of a mushroom, on the surface of which the spore-producing organs are borne. 4 (context animal anatomy English) The fleshy flap that hangs below the beak of a fowl; a wattle. 5 (context figuratively English) The flesh under or about the chin; a wattle. 6 (context spinning English) One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments. vb. 1 To remove the gills from a fish as part of gutting and cleaning it. 2 (lb en transitive) To catch (a fish) in a gillnet. 3 (lb en intransitive) To be or become entangled in a gillnet. Etymology 2

n. 1 A drink measure for spirits and wine. Size varies regionally but it is about one quarter of a pint. 2 (context archaic British English) A measuring jug holding a quarter or half a pint. Etymology 3

n. 1 (context British English) rivulet 2 (context British English) ravine Etymology 4

n. A two-wheeled frame for transporting timber. Etymology 5

alt. (context Scotland English) A leech. n. (context Scotland English) A leech.

1. n. a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters

2. a United States liquid unit equal to 4 fluid ounces

3. any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus [syn: lamella]

4. respiratory organ of aquatic animals that breathe oxygen dissolved in water [syn: branchia]

A gill is an aquatic respiratory organ.

Gill or Gills may also refer to:

Gill is a leading independent publisher and distributor based in Dublin, Ireland. Its publishing activities encompass a wide range of subjects and topics and its name is synonymous with books and publishing in Ireland. Throughout its long history, the company has remained committed to delivering outstanding content for learning and life. Gill is the publisher of many titles that will be familiar to anyone educated in an Irish classroom, including Inis Dom, New Complete Geography and Soundings, as well as popular bestsellers such as The Pope’s Children and Irelandopedia.

A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment.

Many microscopic aquatic animals, and some larger but inactive ones, can absorb adequate oxygen through the entire surface of their bodies, and so can respire adequately without a gill. However, more complex or more active aquatic organisms usually require a gill or gills.

Gills usually consist of thin filaments of tissue, branches, or slender, tufted processes that have a highly folded surface to increase surface area. A high surface area is crucial to the gas exchange of aquatic organisms, as water contains only a small fraction of the dissolved oxygen that air does. A cubic meter of air contains about 250 grams of oxygen at STP. The concentration of oxygen in water is lower than air and it diffuses more slowly. In fresh water, the dissolved oxygen content is approximately 8 cm/L compared to that of air which is 210 cm/L. Water is 777 times more dense than air and is 100 times more viscous. Oxygen has a diffusion rate in air 10,000 times greater than in water. The use of sac-like lungs to remove oxygen from water would not be efficient enough to sustain life. Rather than using lungs, "[g]aseous exchange takes place across the surface of highly vascularised gills over which a one-way current of water is kept flowing by a specialised pumping mechanism. The density of the water prevents the gills from collapsing and lying on top of each other, which is what happens when a fish is taken out of water."

With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians.

Gill is a lunar crater that is located near the southeastern limb of the Moon. Due to its proximity to the edge of the Moon as seen from the Earth, this crater is viewed nearly from the side and it can become hidden from sight due to libration. The crater lies to the southwest of the irregular Mare Australe, and southeast of the prominent crater Pontécoulant. To the southwest of Gill is the crater Helmholtz.

This is an old, eroded crater formation with an outer rim that is uneven from a history of impacts. A joined pair of small craters lie along the northern rim, and Gill A intrudes slightly into the western outer rim. The interior floor is relatively level, and is marked by several craterlets.

On June 11, 2009, the Japanese SELENE lunar orbiter spacecraft was deliberately crashed into the surface of the Moon to the southeast of Gill. The impact site was at selenographic coordinates 65.5 S, 80.4 E. The flash from the impact was successfully observed from Mount Abu Observatory in Guru Shikhar, India. and by the Anglo-Australian Telescope.

Gill Crater is an impact crater in the Arabia quadrangle of Mars, located at 15.9°N latitude and 354.6°W longitude. It is 83.0 km in diameter and was named after David Gill (astronomer), and the name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).

The gill (pronounced ) is a unit of measurement for volume equal to a quarter of a pint. It is no longer in common use, except in regard to the volume of alcoholic spirits measures.

:{| |- style="vertical-align: top;" | 1 imperial gill | ≡ 5 imperial fluid ounces |- | || ≡ imperial gallon |- | || ≡ imperial pint |- | || ≡ 142.0653125 ml |- | || ≈ 142 ml |- | || ≈ 1.2 US gills |}

:{| |- style="vertical-align: top;" | 1 US gill | ≡ 4 US fl oz |- | || ≡ US gallon |- | || ≡ US pint |- | || ≡ US cup |- | || ≡ 8 tablespoons |- | || ≡ 24 teaspoons |- | || ≡ 32 US fluid drams |- | || ≡ 7 in |- | || ≡ 118.29411825 ml |- | || ≈ 118 ml |- | || ≈ imperial gills |}

In Great Britain, the standard single measure of spirits in a pub was gill (23.7 ml) in England, and gill (28.4 ml) in Scotland; after metrication this was replaced by either 25 or 35 ml (0.176- or 0.246-gill) measures (landlords can choose which one to serve). The gill was previously the most common measure in Scotland, and still remains as the standard measure in pubs in Ireland. In southern England, it is also called a noggin. In northern England, however, the large noggin is used, which is two gills. In some areas, a gill came to mean half a pint for both beer and milk.

In Ireland, the standard spirit measure was historically gill. In the Republic of Ireland, it still retains this value, though it is now legally specified in metric units as 35.5 ml.

The Gill was an English car based on the Astra and built in George Street, Paddington, London from 1958 to 1960 by a subsidiary of the British Anzani Company. It was another product of the fuel shortages that occurred during the 1956 Suez Crisis.

Like the Astra it featured a rear-mounted 322 cc air-cooled engine mounted under the floor at the rear and all-round independent suspension with swing axles at the rear. Drive was by chain to the rear wheels through a three-speed motorcycle gearbox with floor-mounted change lever. The brakes were hydraulically operated.

The two seat body was made from aluminium over a wood frame mounted on a steel chassis. It shared the Astra's front bodywork but from the windscreen back it was bodied as a coupé called the Getabout. A four seat taxi version was also proposed and some saloons might have been made. At £500 (£523 for the de-luxe) the car was expensive when a Ford Popular cost £444.

Gill may be a surname or given name, derived from a number of unrelated sources;

• in English, Gill may be a hypocorism of a number of given names, including Giles, Julian, William ( Guillaume), Gillian, etc.
• the Dutch form of the given namen Giles
• in Northern English, Scots and Norwegian, it may be a topographic name, ultimately derived from Old Norse gil "ravine"; c.f. Lord Gill
• as a surname, an anglicization of the Scottish or Irish patronymic McGill (or Mac Gille, Mac An Ghoill and variants)
• in Hebrew, a masculine given name or byname meaning "joy, gladness" (feminine form Gilla)
• a Jat and Sikh clan name, see Gill (clan)

Gill or Ghyll is used for a ravine or narrow valley in the North of England and other parts of the United Kingdom. The word originates from the Old Norse Gil. Examples include Dufton Ghyll Wood, Dungeon Ghyll, Troller's Gill, Brockma Gill and Trow Ghyll. As a related usage, Gaping Gill is the name of a cave, not the associated stream, and Cowgill, Masongill and Halton Gill are derived names of villages.

Where the word Gill refers to a valley, the stream flowing through it is often referred to as a Beck: for example in Swaledale, Gunnerside Beck flows through Gunnerside Ghyll. Beck is also used as a more general term for streams in the north of England – examples include Ais Gill Beck and Arkle Beck. In the North Pennines, the word Sike is found in similar circumstances. This is particularly common in the Appleby Fells area where sikes significantly outnumber the becks and gills; it can also be seen in the name of Eden Sike Cave in Mallerstang.

In the High Weald Gills are deeply cut ravines, usually with a stream in the base which historically eroded the ravine. These Gills may be up to 200 ft (60 metres) deep, which represents a significant physiographic feature in lowland England.

Gill (Buckinghamshire cricketer) (first name and dates of birth and death unknown) was a noted All-England cricketer of the 18th century who was a prominent wicketkeeper. Personal details of Gill, including his first name, have not been found in surviving records.

Gill was active in the period before cricket's statistical record began in the 1772 season and his name appears in the first scorecard of that season. However, it was the last time he is recorded as he must have reached the end of his career. He was previously recorded in the All-England team that played two matches against Dartford in 1759 and it is here that he is named as a wicketkeeper from Buckinghamshire.

Gill's career therefore spanned at least the 1759 to 1772 seasons and, given his involvement in All-England teams at both ends of that span, there can be little doubt that he was one of the most accomplished wicketkeepers of the 1760s, a period from which unfortunately little information has survived.

Gil Seong-joon ( Korean: 길성준, Hanja: 吉成俊; born February 15, 1978), better known by his stage name Gill , is a South Korean singer and television personality. He is the main singer of renowned South Korean hip-hop duo, Leessang.

In 2009, Gil joined Infinity Challenge as a guest and, later on, as a regular co-host. Gil also co-hosted Come To Play. In 2012, Gil joined Voice of Korea as one of the coaches and continued for Season 2. He caught by police for DUI incident in April 2014 and eventually resigned from any public activity including Infinite Challenge and made the comeback in TV program as a producer for Mnet's hip-hop survival program, Show Me The Money 5, in 2016.