Definition of jack

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"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..

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Bluefish :: Bluefish (n.) A large voracious fish (Pomatomus saitatrix), of the family Carangidae, valued as a food fish, and widely distributed on the American coast. On the New Jersey and Rhode Island coast it is called the horse mackerel, in Virginia saltwater tailor, or skipjack..
Jack :: Jack (n.) The jurel.
Jacket :: "Jacket (n.) A garment resembling a waistcoat lined with cork, to serve as a life preserver; -- called also cork jacket..
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..
Jersey :: "Jersey (n.) A kind of knitted jacket; hence, in general, a closefitting jacket or upper garment made of an elastic fabric (as stockinet)..
Chuck :: Chuck (n.) A game played with chucks, in which one or more are tossed up and caught; jackstones..
Jack :: Jack (n.) A machine for twisting the sliver as it leaves the carding machine.
Jack :: "Jack (n.) A compact, portable machine for planing metal..
Knight :: Knight (n.) A playing card bearing the figure of a knight; the knave or jack.
Jack :: "Jack (n.) A popular colloquial name for a sailor; -- called also Jack tar, and Jack afloat..
Jack :: Jack (n.) A grating to separate and guide the threads; a heck box.
Jump :: Jump (n.) A kind of loose jacket for men.
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..
Jackass :: Jackass (n.) The male ass; a donkey.
Ignis Fatuus :: Ignis fatuus () A phosphorescent light that appears, in the night, over marshy ground, supposed to be occasioned by the decomposition of animal or vegetable substances, or by some inflammable gas; -- popularly called also Will-with-the-wisp, or Will-o'-the-wisp, and Jack-with-a-lantern, or Jack-o'-lantern..
Jack-a-dandy :: "Jack-a-dandy (n.) A little dandy; a little, foppish, impertinent fellow..
Jack :: Jack (n.) A device to pull off boots.
Jack :: Jack (n.) A lever for depressing the sinkers which push the loops down on the needles.
Jackanapes :: Jackanapes (n.) A monkey; an ape.
Black-jack :: Black-jack (n.) The ensign of a pirate.
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