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

Black-jack :: Black-jack (n.) The ensign of a pirate.
Jack :: "Jack (n.) A large, California rock fish (Sebastodes paucispinus); -- called also boccaccio, and merou..
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..
Jacket :: "Jacket (n.) In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired..
Minute-jack :: Minute-jack (n.) A timeserver; an inconstant person.
Bootjack :: Bootjack (n.) A device for pulling off boots.
Minute-jack :: Minute-jack (n.) A figure which strikes the hour on the bell of some fanciful clocks; -- called also jack of the clock house.
Black-jack :: Black-jack (n.) A large leather vessel for beer, etc..
Jacket :: Jacket (v. t.) To thrash; to beat.
Rhamnaceous :: Rhamnaceous (a.) Of or pertaining to a natural order of shrubs and trees (Rhamnaceae, or Rhamneae) of which the buckthorn (Rhamnus) is the type. It includes also the New Jersey tea, the supple-jack, and one of the plants called lotus (Zizyphus)..
Jacksaw :: Jacksaw (n.) The merganser.
Merou :: Merou (n.) See Jack, 8 (c)..
Supplely :: Supple-jack (n.) A somewhat similar tropical American plant (Paullinia Curassavica); also, a walking stick made from its stem..
Jack :: Jack (n.) A sawhorse or sawbuck.
Jigger :: "Jigger (n.) A pendulum rolling machine for slicking or graining leather; same as Jack, 4 (i)..
Jackmen :: Jackmen (pl. ) of Jackma.
Jack :: Jack (n.) The wall-eyed pike.
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..
Jackstraw :: "Jackstraw (n.) One of a set of straws of strips of ivory, bone, wood, etc., for playing a child's game, the jackstraws being thrown confusedly together on a table, to be gathered up singly by a hooked instrument, without touching or disturbing the rest of the pile. See Spilikin..
Caddow :: Caddow (n.) A jackdaw.
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