Definition of jack

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Jack (n.) A wooden wedge for separating rocks rent by blasting.

Lern More About Jack

Jack :: Jack (n.) A sawhorse or sawbuck.
Jack-o''-lantern :: "Jack-o'-lantern (n.) See Jack-with-a-lantern, under 2d Jack..
Split :: Split (n.) the division by a player of one hand of blackjack into two hands, allowed when the first two cards dealt to a player have the same value; the player is usually obliged to increase the amount wagered by placing a sum equal to the original bet on the new hand thus created..
Minute-jack :: Minute-jack (n.) A timeserver; an inconstant person.
Jack :: "Jack (n.) A mechanical contrivance, an auxiliary machine, or a subordinate part of a machine, rendering convenient service, and often supplying the place of a boy or attendant who was commonly called Jack.
Jackscrew :: "Jackscrew (n.) A jack in which a screw is used for lifting, or exerting pressure. See Illust. of 2d Jack, n., 5..
Jackass :: Jackass (n.) The male ass; a donkey.
Jack :: "Jack (n.) An impertinent or silly fellow; a simpleton; a boor; a clown; also, a servant; a rustic..
Jackdaw :: "Jackdaw (n.) See Daw, n..
Jacket :: "Jacket (n.) An outer covering for anything, esp. a covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc..
Jack :: "Jack (n.) A system of gearing driven by a horse power, for multiplying speed..
Jacket :: "Jacket (v. t.) To put a jacket on; to furnish, as a boiler, with a jacket..
Jacketing :: "Jacketing (n.) The material of a jacket; as, nonconducting jacketing..
Jackpudding :: Jackpudding (n.) A merry-andrew; a buffoon.
Jackstay :: "Jackstay (n.) A rail of wood or iron stretching along a yard of a vessel, to which the sails are fastened..
Jackmen :: Jackmen (pl. ) of Jackma.
Ketch :: Ketch (n.) A hangman. See Jack Ketch.
Jane-of-apes :: "Jane-of-apes (n.) A silly, pert girl; -- corresponding to jackanapes..
Jacksnipe :: "Jacksnipe (n.) A small American sandpiper (Tringa maculata); -- called also pectoral sandpiper, and grass snipe..
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..
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