Definition of jack

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"Jack (n.) A system of gearing driven by a horse power, for multiplying speed..

Lern More About Jack

Jack :: "Jack (n.) A bar of iron athwart ships at a topgallant masthead, to support a royal mast, and give spread to the royal shrouds; -- called also jack crosstree..
Juppon :: "Juppon (n.) A sleeveless jacket worn over the armor in the 14th century. It fitted closely, and descended below the hips..
Garibaldi :: Garibaldi (n.) A jacket worn by women; -- so called from its resemblance in shape to the red shirt worn by the Italians patriot Garibaldi.
Plane :: Plane (a.) A tool for smoothing boards or other surfaces of wood, for forming moldings, etc. It consists of a smooth-soled stock, usually of wood, from the under side or face of which projects slightly the steel cutting edge of a chisel, called the iron, which inclines backward, with an apperture in front for the escape of shavings; as, the jack plane; the smoothing plane; the molding plane, etc..
Skipjack :: Skipjack (n.) An upstart.
Liner :: Liner (n.) A lining within the cylinder, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket..
Jackeen :: "Jackeen (n.) A drunken, dissolute fellow..
Sphalerite :: Sphalerite (n.) Zinc sulphide; -- called also blende, black-jack, false galena, etc. See Blende (a)..
Camisole :: Camisole (n.) A kind of straitjacket.
Jackscrew :: "Jackscrew (n.) A jack in which a screw is used for lifting, or exerting pressure. See Illust. of 2d Jack, n., 5..
Jack :: "Jack (n.) A portable machine variously constructed, for exerting great pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack..
Merou :: Merou (n.) See Jack, 8 (c)..
Split :: Split (v. i.) to divide one hand of blackjack into two hands, allowed when the first two cards dealt to a player have the same value..
Jack :: Jack (n.) A device to pull off boots.
Air Jacket :: Air jacket () A jacket having air-tight cells, or cavities which can be filled with air, to render persons buoyant in swimming..
Blende :: Blende (n.) A mineral, called also sphalerite, and by miners mock lead, false galena, and black-jack. It is a zinc sulphide, but often contains some iron. Its color is usually yellow, brown, or black, and its luster resinous..
Allfours :: Allfours () A game at cards, called High, Low, Jack, and the Game..
Wasp :: Wasp (n.) Any one of numerous species of stinging hymenopterous insects, esp. any of the numerous species of the genus Vespa, which includes the true, or social, wasps, some of which are called yellow jackets..
Honor :: Honor (n.) The ace, king, queen, and jack of trumps. The ten and nine are sometimes called Dutch honors..
Mistress :: Mistress (n.) The old name of the jack at bowls.
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