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Screw :: Screw (n.) 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..

Screw :: Screw (n.) 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..

Machine :: Machine (n.) In general, any combination of bodies so connected that their relative motions are constrained, and by means of which force and motion may be transmitted and modified, as a screw and its nut, or a lever arranged to turn about a fulcrum or a pulley about its pivot, etc.; especially, a construction, more or less complex, consisting of a combination of moving parts, or simple mechanical elements, as wheels, levers, cams, etc., with their supports and connecting framework, calculated to

Hindleys Screw :: Hindleys screw () A screw cut on a solid whose sides are arcs of the periphery of a wheel into the teeth of which the screw is intended to work. It is named from the person who first used the form.

Spanner :: Spanner (n.) An iron instrument having a jaw to fit a nut or the head of a bolt, and used as a lever to turn it with; a wrench; specifically, a wrench for unscrewing or tightening the couplings of hose..

Blank :: Blank (n.) A piece of metal prepared to be made into something by a further operation, as a coin, screw, nuts..

Counterbore :: Counterbore (n.) A flat-bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head..

Race :: Race (v. i.) To run too fast at times, as a marine engine or screw, when the screw is lifted out of water by the action of a heavy sea..

Lute :: Lute (n.) A stringed instrument formerly much in use. It consists of four parts, namely, the table or front, the body, having nine or ten ribs or sides, arranged like the divisions of a melon, the neck, which has nine or ten frets or divisions, and the head, or cross, in which the screws for tuning are inserted. The strings are struck with the right hand, and with the left the stops are pressed..

Thumbscrew :: Thumbscrew (n.) A screw having a flat-sided or knurled head, so that it may be turned by the thumb and forefinger..

Countersink :: Countersink (v. t.) To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork..

Screw :: Screw (v. i.) To turn one's self uneasily with a twisting motion; as, he screws about in his chair..

Pitch :: Pitch (n.) The length, measured along the axis, of a complete turn of the thread of a screw, or of the helical lines of the blades of a screw propeller..

Chase :: Chase (v. t.) To cut, so as to make a screw thread..

Archimedes :: Archimedes (n.) An extinct genus of Bryzoa characteristic of the subcarboniferous rocks. Its form is that of a screw.

Corkscrew :: Corkscrew (v. t.) To press forward in a winding way; as, to corkscrew one's way through a crowd..

Nut :: Nut (n.) A perforated block (usually a small piece of metal), provided with an internal or female screw thread, used on a bolt, or screw, for tightening or holding something, or for transmitting motion. See Illust. of lst Bolt..

Spiral :: Spiral (a.) Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical..

Mesquit :: Mesquit (n.) A name for two trees of the southwestern part of North America, the honey mesquite, and screw-pod mesquite..

Screwed :: Screwed (imp. & p. p.) of Scre.

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