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The Collaborative International Dictionary
twisty

Screw \Screw\ (skr[udd]), n. [OE. scrue, OF. escroue, escroe, female screw, F. ['e]crou, L. scrobis a ditch, trench, in LL., the hole made by swine in rooting; cf. D. schroef a screw, G. schraube, Icel. skr[=u]fa.]

  1. A cylinder, or a cylindrical perforation, having a continuous rib, called the thread, winding round it spirally at a constant inclination, so as to leave a continuous spiral groove between one turn and the next, -- used chiefly for producing, when revolved, motion or pressure in the direction of its axis, by the sliding of the threads of the cylinder in the grooves between the threads of the perforation adapted to it, the former being distinguished as the external, or male screw, or, more usually the screw; the latter as the internal, or female screw, or, more usually, the nut.

    Note: The screw, as a mechanical power, is a modification of the inclined plane, and may be regarded as a right-angled triangle wrapped round a cylinder, the hypotenuse of the marking the spiral thread of the screw, its base equaling the circumference of the cylinder, and its height the pitch of the thread.

  2. Specifically, a kind of nail with a spiral thread and a head with a nick to receive the end of the screw-driver. Screws are much used to hold together pieces of wood or to fasten something; -- called also wood screws, and screw nails. See also Screw bolt, below.

  3. Anything shaped or acting like a screw; esp., a form of wheel for propelling steam vessels. It is placed at the stern, and furnished with blades having helicoidal surfaces to act against the water in the manner of a screw. See Screw propeller, below.

  4. A steam vesel propelled by a screw instead of wheels; a screw steamer; a propeller.

  5. An extortioner; a sharp bargainer; a skinflint; a niggard.
    --Thackeray.

  6. An instructor who examines with great or unnecessary severity; also, a searching or strict examination of a student by an instructor. [Cant, American Colleges]

  7. A small packet of tobacco. [Slang]
    --Mayhew.

  8. An unsound or worn-out horse, useful as a hack, and commonly of good appearance.
    --Ld. Lytton.

  9. (Math.) A straight line in space with which a definite linear magnitude termed the pitch is associated (cf. 5th Pitch, 10 (b) ). It is used to express the displacement of a rigid body, which may always be made to consist of a rotation about an axis combined with a translation parallel to that axis.

  10. (Zo["o]l.) An amphipod crustacean; as, the skeleton screw ( Caprella). See Sand screw, under Sand. Archimedes screw, Compound screw, Foot screw, etc. See under Archimedes, Compound, Foot, etc. A screw loose, something out of order, so that work is not done smoothly; as, there is a screw loose somewhere. --H. Martineau. Endless screw, or perpetual screw, a screw used to give motion to a toothed wheel by the action of its threads between the teeth of the wheel; -- called also a worm. Lag screw. See under Lag. Micrometer screw, a screw with fine threads, used for the measurement of very small spaces. Right and left screw, a screw having threads upon the opposite ends which wind in opposite directions. Screw alley. See Shaft alley, under Shaft. Screw bean. (Bot.)

    1. The curious spirally coiled pod of a leguminous tree ( Prosopis pubescens) growing from Texas to California. It is used for fodder, and ground into meal by the Indians.

    2. The tree itself. Its heavy hard wood is used for fuel, for fencing, and for railroad ties. Screw bolt, a bolt having a screw thread on its shank, in distinction from a key bolt. See 1st Bolt, 3. Screw box, a device, resembling a die, for cutting the thread on a wooden screw. Screw dock. See under Dock. Screw engine, a marine engine for driving a screw propeller. Screw gear. See Spiral gear, under Spiral. Screw jack. Same as Jackscrew. Screw key, a wrench for turning a screw or nut; a spanner wrench. Screw machine.

      1. One of a series of machines employed in the manufacture of wood screws.

      2. A machine tool resembling a lathe, having a number of cutting tools that can be caused to act on the work successively, for making screws and other turned pieces from metal rods. Screw pine (Bot.), any plant of the endogenous genus Pandanus, of which there are about fifty species, natives of tropical lands from Africa to Polynesia; -- named from the spiral arrangement of the pineapple-like leaves. Screw plate, a device for cutting threads on small screws, consisting of a thin steel plate having a series of perforations with internal screws forming dies. Screw press, a press in which pressure is exerted by means of a screw. Screw propeller, a screw or spiral bladed wheel, used in the propulsion of steam vessels; also, a steam vessel propelled by a screw. Screw shell (Zo["o]l.), a long, slender, spiral gastropod shell, especially of the genus Turritella and allied genera. See Turritella. Screw steamer, a steamship propelled by a screw. Screw thread, the spiral rib which forms a screw. Screw stone (Paleon.), the fossil stem of an encrinite. Screw tree (Bot.), any plant of the genus Helicteres, consisting of about thirty species of tropical shrubs, with simple leaves and spirally twisted, five-celled capsules; -- also called twisted-horn, and twisty. Screw valve, a stop valve which is opened or closed by a screw. Screw worm (Zo["o]l.), the larva of an American fly ( Compsomyia macellaria), allied to the blowflies, which sometimes deposits its eggs in the nostrils, or about wounds, in man and other animals, with fatal results. Screw wrench.

        1. A wrench for turning a screw.

        2. A wrench with an adjustable jaw that is moved by a screw.

          To put the screws on or To put the screw on, to use pressure upon, as for the purpose of extortion; to coerce.

          To put under the screw or To put under the screws, to subject to pressure; to force.

          Wood screw, a metal screw with a sharp thread of coarse pitch, adapted to holding fast in wood. See Illust. of Wood screw, under Wood.

Douglas Harper's Etymology Dictionary
twisty

1857, "full of windings," from twist (n.) + -y (2). Meaning "attractively feminine," 1970s slang, is from twist "girl" (1928), apparently from rhyming slang twist and twirl (1924).

Wiktionary
twisty

a. 1 that twists 2 curly n. Something that is #Adjective, such as a road

WordNet
twisty

adj. marked by repeated turns and bends; "a tortuous road up the mountain"; "winding roads are full of surprises"; "had to steer the car down a twisty track" [syn: tortuous, twisting, winding]

Usage examples of "twisty".

Up and up the dreadful threat would fly, booming and echoing through all the narrow, dark and twisty flues, until it found out Barnacle, exactly as Mister Roberts had divined, squatting in some sooty nook and, if there was room enough to move his arms, a-picking of his nose.

A sort of twisty, melty, squishy feeling that made her want to swoon like a heroine in one of those ridiculous romance novels.

A few of them are roosting in feathered skins on the roof of the porch and in the twisty boughs of the old crab apple tree growing up along one side of it.

The soap had a long twisty, turny name that Whitney could never remember.

The way was twisty and turny, stalactited and stalagmited, rough and rocky yet covered with a thin, greasy scum of clay in which we slipped and slid.

Sylvia and I walked down an aisle lined with big books with colourful covers showing balls with spikes and short twisty trains.

The road became twistier by the mile, and as I followed its serpentine course I also snaked back through my memory to the day when Jelly Jordan, Luke Bendingo, and I had driven to Yontsdown to pass out free tickets and cash to county officials, hoping to grease the rails for the Sombra Brothers Carnival.

It was a lovely sensation, one the agent had always appreciated, catapulting from the twisty dark gorge onto that flatland, with a straight highway aiming exactly north.

A mountainous place, where the falls come over the cliffs into World River, and the ships have to tie up behind great shattered rocks along the sheer walls and the boatmen climb steep, twisty stairs to reach the towns above.

His one-bedroom unit included a roomy kitchen with breakfast nook and a spacious living room with windows looking down on twisty Lombard Street.

His first awkward efforts to play the chosen instrument send, clashing noises down the twisty aisles of this strange temple of books, hidden beneath a cave of stone.

His body one great slab o' rock that flake off side o' tired old mountain an' de arms hang from dat like twisty cypress.

There is an observation dome tucked behind the bridge, accessible only by a twisty ladder with rungs set much too close together.

Now the shadow of the Emancipator passed over Babylon, slipping over square miles of flat roofs and courtyards and narrow twisty streets, cut here and there by the broader processional ways.

He also discovered that some chunks were harder than others, and some sappier, and others twistier.