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A tool or machine for forming a thread on a screw or in a nut.

breaking down of the roof of a gallery under its superincumbent weight. Thrust bearing (Screw Steamers), a bearing arranged to receive the thrust or endwise pressure of the screw shaft. -- Thrust plane (Geol.), the surface along which dislocation has taken place in the case of a reversed fault.

of which butter is sometimes made. [Written also thrutchthings.] [Prov. Eng.] Thrusting screw, the screw of a screw press, as for pressing curd in making cheese. [R.]

rk spot over each foot in finely bred black and tan terriers. -- Thumb nut, a nut for a screw, having wings to grasp between the thumb and fingers in turning it; also, a nut with a knurled rim for the same perpose. -- Thumb ring, a ring worn on the thumb. Shak. -- Thumb stall. (a) A kind of thimble or ferrule of iro…

An instrument of torture for compressing the thumb; a thumbscrew.

consists of two thin slips of steel welded together, their length being adjystable by a screw socket.

ially of a pad or compress upon which pressure is made by a band which is tightened by a screw or other means.

leeward. G. Francis. -- Turn of life (Med.), change of life. See under Change. -- Turn screw, a screw driver.

A loop or sleeve with a screw thread at one end and a swivel at the other, -- used for tightening a rod, stay, etc.

hich has pretty, fragrant, pendulous flowers borne in pairs on a slender stalk. -- Twin-screw steamer, a steam vessel propelled by two screws, one on either side of the plane of the keel.

entucky. Other plants in various countries are called by this name, especially a kind of screw pine (Pandanus odoratissimus).

nder the guise of friendship; Morpheus is represented under the figure of a boy asleep. A crew who, under names of old renown . . . abused Fanatic Egypt. Milton. Mr. Duke may be mentioned under the double capacity of a poet and a divine. Felton. Under this head may come in the several contests and wars betwixt popes an…

ners; conduct; behavior. [Obs.] A gentle nymph was found, Hight Astery, excelling all the crew In courteous usage. Spenser.

similar fixture of any form moved in or by water, air, or other fluid; as, the vane of a screw propeller, a fan blower, an anemometer, etc.

One belonging to the pirate crews from among the Northmen, who plundered the coasts of Europe in the eighth, ninth, and tenth centuries. Of grim Vikings, and the rapture Of the sea fight, and the capture, And the life of slavery. Longfellow.

An instrument consisting of two jaws, closing by a screw, lever, cam, or the like, for holding work, as in filing. [Written also vice.]

us purposes, as for stopping an aperture, padding a garment, etc. Wed hook, a rod with a screw or hook at the end, used for removing the wad from a gun.

witch; a wizard; a sprite; an imp. [Written also warluck.] Dryden. It was Eyvind Kallda's crew Of warlocks blue, With their caps of darkness hooded! Longfellow.

The backward current or disturbed water caused by the action of oars, or of a steamer's screw or paddles, etc.

or other material, or a perforated plate, used for various purposes, as around a bolt or screw to form a seat for the head or nut, or around a wagon axle to prevent endwise motion of the hub of the wheel and relieve friction, or in a joint to form a packing, etc.