screw   (skrōō)    (click for larger image in new window) n.   A cylindrical rod incised with one or more helical or advancing spiral threads, as a lead screw or worm screw. The tapped collar or socket that receives this rod. A tapered and pointed wood screw. A cylindrical and flat-tipped machine screw. A prison guard. The turnkey of a jail. Salary; wages. A small paper packet, as of tobacco. An old broken-down horse. A stingy or crafty bargainer. A metal pin with incised threads and a broad slotted head that can be driven as a fastener by turning with a screwdriver, especially: A tapered and pointed wood screw. A cylindrical and flat-tipped machine screw. A prison guard. The turnkey of a jail. Salary; wages. A small paper packet, as of tobacco. An old broken-down horse. A stingy or crafty bargainer. A device having a helical form, such as a corkscrew. A propeller. A twist or turn of or as if of a screw. Slang A prison guard. The turnkey of a jail. Salary; wages. A small paper packet, as of tobacco. An old broken-down horse. A stingy or crafty bargainer. Vulgar Slang The act or an instance of having sexual intercourse. Chiefly British Slang Salary; wages. A small paper packet, as of tobacco. An old broken-down horse. A stingy or crafty bargainer. v.   screwed, screw·ing, screws v.   tr. To drive or tighten (a screw). To fasten, tighten, or attach by or as if by means of a screw. To attach (a tapped or threaded fitting or cap) by twisting into place. To rotate (a part) on a threaded axis. To contort (one's face). Slang To take advantage of; cheat: screwed me out of the most lucrative sales territory. Vulgar Slang To have sexual intercourse with. v.   intr. To turn or twist. To become attached by means of the threads of a screw. To be capable of such attachment. Vulgar Slang To have sexual intercourse. Slang To act or fool around aimlessly or in a confused way and accomplish nothing. Vulgar Slang To be sexually promiscuous. To muster or summon up: screwed up my courage. Slang To make a mess of (an undertaking). Slang To injure; damage: Lifting those boxes really screwed up my back. Slang To make neurotic or anxious. Phrasal Verb(s): screw around Slang To act or fool around aimlessly or in a confused way and accomplish nothing. Vulgar Slang To be sexually promiscuous. screw up To muster or summon up: screwed up my courage. Slang To make a mess of (an undertaking). Slang To injure; damage: Lifting those boxes really screwed up my back. Slang To make neurotic or anxious. Idiom(s): have a screw loose Slang To behave in an eccentric manner. To be insane. [Middle English skrewe, from Old French escrove, female screw, nut, perhaps from Medieval Latin scrōfa, from Latin, sow; see sker-1 in Indo-European roots.] screw'a·ble adj., screw'er n.

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, 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.) (a) 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. (b) 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. (a) One of a series of machines employed in the manufacture of wood screws. (b) 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. (a) A wrench for turning a screw. (b) A wrench with an adjustable jaw that is moved by a screw.

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

To put under the screw or 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.

screw

n. [MIT] A lose, usually in software. Especially used for user-visible misbehavior caused by a bug or misfeature. This use has become quite widespread outside MIT.

screw  (n.)

Main Entry: screw
Pronunciation: 'skrü
Function: noun
: a threaded device used in bone surgery for fixation of parts (as fragments of fractured bones)

screw jargon
(MIT) A lose, usually in software. Especially used for user-visible misbehaviour caused by a bug or misfeature. This use has become quite widespread outside MIT.
[The Jargon File]
(1994-12-01)

screw

In addition to the idioms beginning with screw, also see have a screw loose; pluck (screw) up one's courage; tighten the screws; turn up the heat (put the screws on).