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Longman Dictionary of Contemporary English
dorsal fin
▪ a shark’s dorsal fin
fin de siècle
▪ The tail, or caudal fin, is large and sickle-shaped, to give short, rapid bursts of speed.
▪ In addition, it has some yellow on the soft dorsal and caudal fins.
▪ These are powerfully developed and, with the caudal fin, achieve a swift forward thrust.
▪ The caudal fin is yellow-brown, and the dorsal spine and long snout are orange.
▪ It is a uniform bright yellow and has a large lyre-shaped caudal fin.
▪ The trigger, which gives the fish its name, is the leading ray of its dorsal fin which has become bony.
▪ There is nothing clown-like at all about a pale pink fish with a light stripe along the base of the dorsal fin.
▪ The dorsal fin is like a yacht sail; tall and similarly shaped.
▪ In its dorsal and pectoral fins this fish has spines equipped with venom glands.
▪ New fibreglass wing tips and dorsal fin additions were attached.
▪ In addition, it has some yellow on the soft dorsal and caudal fins.
▪ This is the mark in the water caused by the fish's dorsal fin.
▪ Soon, however, many are projecting their dorsal fins high out of the water and are confidently pecking at their food.
▪ Although flying fish leap out of the water they do not porpoise but glide, using their pectoral fins as aerodynamic surfaces.
▪ When excited or scared, a white streak appears on the sides, extending backwards from the pectoral fins.
▪ It sustains its leap with high-speed flapping of its oversized pectoral fins for distances of up to 100 metres.
▪ In its dorsal and pectoral fins this fish has spines equipped with venom glands.
▪ Their pectoral fins have been turned to yet more purposes.
▪ The two spines are the first rays of each pectoral fin.
▪ The caudal, dorsal and pectoral fins are marked with darker stripes.
▪ The prehensile pectoral fins actually grasp the weed as the fish moves about.
▪ She uses twitching and flicking movements of her sooty-black pelvic fins to communicate with the fry.
▪ They are also characterized by their pelvic fins, which are jugular in position and have two to four rays.
▪ The pectoral and pelvic fins and the dorsal along the crest of the back play no part in propulsion.
▪ The swordfish does not have pelvic fins.
▪ During mating the female holds her pelvic fins together to form a pouch into which the eggs are laid.
▪ The shape of the elongated spiky dorsal fin is reflected in the sweep of the flowing ventral fins.
▪ They frequently can be seen perched on a rock and propped up on their ventral fins as if surveying their little world.
▪ The male is a little larger than the female and has very bright orange ventral fins when in breeding colouration.
▪ Its ventral fins are enlarged and flattened to form suckers on the underside of the body.
▪ Note the downturned wingtips and large ventral fin.
▪ He uses his enlarged tail fin to regularly splash them with water, until they hatch about two days later.
▪ Luxurystarved veterans tapped wartime savings to buy record numbers of wraparound windshields and tail fins.
▪ It has no tail fin like those of other fish, merely a fleshy stump.
▪ Picture a shallow pool with a glassy surface, and in the pool picture minnows fluttering their tail fins but otherwise stationary.
▪ Males are slimmer than females, with a more deeply forked tail fin.
▪ It is a conveyance of dreams: chrome, tail fins, pale blue bodywork.
▪ Almost all the major fins possess spines and venom glands.
▪ Cars are fatter and fewer, and imitate animals with their fins and wings.
▪ Picture a shallow pool with a glassy surface, and in the pool picture minnows fluttering their tail fins but otherwise stationary.
▪ The caudal fin is yellow-brown, and the dorsal spine and long snout are orange.
▪ This is a deep blue fish with red shading on his fins.
▪ When stocking a pool with fish, take care to select healthy individuals with firm, meaty bodies and erect dorsal fins.
The Collaborative International Dictionary

Fin \Fin\ (f[i^]n), v. t. [imp. & p. p. Finned; p. pr. & vb. n. Finning.] [Cf. Fin of a fish.] To carve or cut up, as a chub.


Fin \Fin\, n. [See Fine, n.] End; conclusion; object. [Obs.] ``She knew eke the fin of his intent.''


Fin \Fin\, n.[OE. finne, fin, AS. finn; akin to D. vin, G. & Dan. finne, Sw. fena, L. pinna, penna, a wing, feather. Cf. pen a feather.]

  1. (Zo["o]l.) An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous ossicles, and serving to balance and propel it in the water.

    Note: Fishes move through the water chiefly by means of the caudal fin or tail, the principal office of the other fins being to balance or direct the body, though they are also, to a certain extent, employed in producing motion.

  2. (Zo["o]l.) A membranous, finlike, swimming organ, as in pteropod and heteropod mollusks.

  3. A finlike organ or attachment; a part of an object or product which protrudes like a fin, as:

    1. The hand. [Slang]

    2. (Com.) A blade of whalebone. [Eng.]

    3. (Mech.) A mark or ridge left on a casting at the junction of the parts of a mold.

    4. (Mech.) The thin sheet of metal squeezed out between the collars of the rolls in the process of rolling.

    5. (Mech.) A feather; a spline.

  4. A finlike appendage, as to submarine boats.

  5. (A["e]ronautics) A fixed stabilizing surface, usually vertical, similar in purpose to a bilge keel on a ship.

    Apidose fin. (Zo["o]l.) See under Adipose, a.

    Fin ray (Anat.), one of the hornlike, cartilaginous, or bony, dermal rods which form the skeleton of the fins of fishes.

    Fin whale (Zo["o]l.), a finback.

    Paired fins (Zo["o]l.), the pectoral and ventral fins, corresponding to the fore and hind legs of the higher animals.

    Unpaired fins, or Median fins (Zo["o]l.), the dorsal, caudal, and anal fins.

Douglas Harper's Etymology Dictionary

Old English finn "fin," from Proto-Germanic *finno (cognates: Middle Low German vinne, Dutch vin), perhaps from Latin pinna "feather, wing" (see pin (n.)); or, less likely, from Latin spina "thorn, spine" (see spine).\n

\nU.S. underworld slang sense of "$5 bill" is 1925, from Yiddish finif "five," from German fünf (see five) and thus unrelated. The same word had been used in England in 1868 to mean "five pound note" (earlier finnip, 1839).


Etymology 1 n. (context ichthyology English) One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver. vb. 1 (senseid en cut fins)(context transitive English) To cut the fins from a fish, shark, etc. 2 (context intransitive English) To swim in the manner of a fish. 3 (context transitive English) To provide (a motor vehicle etc) with fins. Etymology 2

n. (context US slang English) A five-dollar bill.

  1. n. the cardinal number that is the sum of four and one [syn: five, 5, V, cinque, quint, quintet, fivesome, quintuplet, pentad, Phoebe, Little Phoebe]

  2. one of a pair of decorations projecting above the rear fenders of an automobile [syn: tail fin, tailfin]

  3. one of a set of parallel slats in a door or window to admit air and reject rain [syn: louver, louvre]

  4. a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater) [syn: flipper, flippers, fins]

  5. a stabilizer that resembles the fins of a fish

  6. organ of locomotion and balance in fishes and some other aquatic animals

  7. [also: finning, finned]

  1. v. equip (a car) with fins

  2. propel oneself through the water in a finning motion

  3. show the fins above the water while swimming; "The sharks were finning near the surface" [syn: break water]

  4. [also: finning, finned]


Fín was an Irish Princess, who lived during the 7th century. She was a daughter or granddaughter of Colmán Rímid (died 604) of Cenél nEógain.

She formed some sort of marriage with Oswiu of Northumbria (c. 612 – 15 February 670), by whom she had Aldfrith (d. 14 December 704/705),

Fin (troll)

Fin is a troll in a legend from Kalundborg, Zealand, Denmark. The legend also exists in Sweden, but it instead has a giant from Lund, with the name Jätten Finn ("Finn the Giant").

Fin (disambiguation)

Fin is a surface used to produce lift and thrust or to steer while traveling in water, air, or other fluid media.

Fin or Fins may also refer to:

Fin (song)

"Fin" is a song from British rock band Supergrass' 2005 album, Road to Rouen. It was released on 2 January 2006 as the third single from the album (see 2006 in music). It was only available as a 7" and digital download, and only charted in the UK at #111.

The song is a very slow and gentle ballad, with 'watery' effects over the vocals.

Fin (comics)

The Fin is the name of two fictional characters appearing in American comic books published by Marvel Comics. The Golden Age Fin has elements of both the swashbuckling pirate and superhero genres.

Fin (band)

fiN is a British rock band formed in South West London, Surrey, England in 2011. The band consists of Luke Joyce (Vocals/Guitar) Jonny Garner (Guitar), Kerry Lambert (Bass) and Simon Harding (Drums). fiN began releasing music in October 2011 with a debut Double A side single The Artisan/It Changes Everything (2011); The band were quickly labeled as the Heaviest Indie band around and are likened to Foo fighters, dEUS (band) & Radiohead.

Fin (album)

Fin (stylized as ƒIN) is the debut album by Barcelona-based producer John Talabot, released on February 14, 2012.

Fin (extended surface)

In the study of heat transfer, fins are surfaces that extend from an object to increase the rate of heat transfer to or from the environment by increasing convection. The amount of conduction, convection, or radiation of an object determines the amount of heat it transfers. Increasing the temperature gradient between the object and the environment, increasing the convection heat transfer coefficient, or increasing the surface area of the object increases the heat transfer. Sometimes it is not feasible or economical to change the first two options. Thus, adding a fin to an object, increases the surface area and can sometimes be an economical solution to heat transfer problems.

Fin (geology)

Fins are narrow, residual walls of hard sedimentary rock (e.g., sandstone, limestone) that remain upright after adjacent rock has been eroded away along systematic parallel joints or fractures on either side. (They are named by analogy with a fish's dorsal fin, which they resemble.)

A fin is typically formed when a narrow butte or plateau develops a series of vertical cracks in a parallel pattern (often due to tensional stresses along anticlinal or monoclinal fold axes). Differential water erosion, sometimes as part of a freeze-thaw cycle, opens the cracks wider and wider over time. Where two or more fins are present, a slot canyon may be formed between them. A wall left standing in between two slot canyons may be termed a fin. Alternatively, an entirely isolated single fin may develop where a rock stratum is notably harder (more resistant to weathering) relative to neighboring strata.

Fins are considered an intermediary stage in the formation of other striking erosional features including alcoves, windows and arches; these are natural holes that form along cracks and weak spots in the sides of fins. Myriads of fins, and more advanced erosional features, may be seen at Arches National Park in Utah, US.

[[ formation-Big.jpg|thumb|620px|center|

Progressive erosion producing plateau, fin, window (or arch),
and hoodoos (or spires).]]

Rock fins and arches are believed to form slowly over long periods of time by physical and chemical weathering. Four steps are proposed: (1) uplift that causes deep vertical, parallel fractures to form; (2) weathering and erosion that enlarge fractures resulting in narrow walls or fins; (3) continuing erosion with some fins breached from below; and (4) continued weathering that enlarges the holes and eventually causes the arch to collapse, forming spires or hoodoos.

Usage examples of "fin".

Finning itself into a frenzy, the afanc began swimming in circles above the group.

He and his agemates had hunted in the sea for tasty mirrat, small finned swimmers which only migrated through the area at that time of the orbital cycle.

He stirred his limbs in the thick, gold liquid, found that he had less mobility than an embryo, that his fingers had turned to fins, that his muscles had atrophied to weak rags, and that this pain was the true medium and placental fluid of the universe.

There were a few gaps through, for the axial corridors connecting the main cylinder to the nonrotating docking net at each end, shafts for the pipes carrying fluid to and from the fins, and the observation gallery.

Two weeks ago, some ten to fifteen sleeps ago, by rare fortune, we had managed to harpoon a baleen whale, a bluish, white-spotted blunt fin.

Before we had slept that night, and after Imnak had constructed our shelter, he removed from the supplies several strips of supple baleen, whale bone, taken from the baleen whale, the bluish blunt fin, which we had killed before taking the black Hunjer whale.

Novelli le vit, au fin bout de son banc, agiter les mains devant la figure des parleurs, pour les faire taire.

Christine Marshall, Clint and Lori Smith, Kevin and Laura Smith, Jim and Paula HufFinan, Harper and Connie Wren, Jim and Debbie Riordan, Steve and Donna Blinn, Tony and Janey Marzulli, Carrie Rudiselle, Barry and Terry Santavy, Nate and Shirley Lyndsay, Manolo and Virginia Lopez, Fin and Adrian Johnston, Kelly and Kathy Higgins, Brian and Suzy Neuman, David and Terri Schaal, Seth and Karen Semkin, Andy Flamard and special thanks to my manager Kathy Horn!

Sherry North was suited and finned and Chubby sat in the stern beside the motors holding us on station.

Henri, sous notre ciel humide et fin, semblait plus pres des hommes, et plus mele aux choses de ce monde!

A tall fin cleaved the surface a moment later, and the bellow of the mate announced that he had also sighted the shark.

Carefully Shasa stripped a hundred feet of line off the big Fin Nor and coiled it on the deck.

Also we had one fin and rudder badly damaged and a huge hole in the port wing.

FIN DE LA PREMIERE PARTIE DEUXIEME PARTIE I Fidele a sa promesse, Anie avait amene sa mere a demander elle-meme de ne pas vendre le chateau.

And, boy, did they know from tack downhaul, kicking strap, mainsheet, clew outhaul, topping lift, boom, tack, reefing points, leech, spreader, foresail hanks, shrouds, inner forestay, stanchion, toe rail, and fin keel!