Definition of jack

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"Jack (n.) A flag, containing only the union, without the fly, usually hoisted on a jack staff at the bowsprit cap; -- called also union jack. The American jack is a small blue flag, with a star for each State..

Lern More About Jack

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..
Bonito :: Bonito (n.) The skipjack (Sarda Mediterranea) of the Atlantic, an important and abundant food fish on the coast of the United States, and (S. Chilensis) of the Pacific, and other related species. They are large and active fishes, of a blue color with black oblique stripes..
Jack Ketch :: "Jack Ketch () A public executioner, or hangman..
Skipjack :: Skipjack (n.) A name given to several kinds of a fish, as the common bluefish, the alewife, the bonito, the butterfish, the cutlass fish, the jurel, the leather jacket, the runner, the saurel, the saury, the threadfish, etc..
Cleading :: Cleading (n.) A jacket or outer covering of wood, etc., to prevent radiation of heat, as from the boiler, cylinder. etc., of a steam engine..
Jacket :: "Jacket (v. t.) To put a jacket on; to furnish, as a boiler, with a jacket..
Black-jack :: Black-jack (n.) A name given by English miners to sphalerite, or zinc blende; -- called also false galena. See Blende..
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..
Bootjack :: Bootjack (n.) A device for pulling off boots.
Jackdaw :: "Jackdaw (n.) See Daw, n..
Jack :: "Jack (n.) A drinking measure holding half a pint; also, one holding a quarter of a pint..
Jack :: Jack (n.) A wooden wedge for separating rocks rent by blasting.
Cardigan Jacket :: Cardigan jacket () A warm jacket of knit worsted with or without sleeves.
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..
Jack :: Jack (n.) The small bowl used as a mark in the game of bowls.
Jack :: Jack (n.) A machine for twisting the sliver as it leaves the carding machine.
Jackstay :: "Jackstay (n.) A rail of wood or iron stretching along a yard of a vessel, to which the sails are fastened..
Air Jacket :: Air jacket () A jacket having air-tight cells, or cavities which can be filled with air, to render persons buoyant in swimming..
Jack :: Jack (n.) A device to pull off boots.
Black-jack :: Black-jack (n.) A large leather vessel for beer, etc..
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