Definition of jack

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"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.

Lern More About Jack

Jackstay :: "Jackstay (n.) A rail of wood or iron stretching along a yard of a vessel, to which the sails are fastened..
Color :: Color (n.) A distinguishing badge, as a flag or similar symbol (usually in the plural); as, the colors or color of a ship or regiment; the colors of a race horse (that is, of the cap and jacket worn by the jockey)..
Sauce-alone :: Sauce-alone (n.) Jack-by-the-hedge. See under Jack.
Jack Ketch :: "Jack Ketch () A public executioner, or hangman..
Jack :: Jack (n.) The small bowl used as a mark in the game of bowls.
Crick :: Crick (n.) A small jackscrew.
Jackass :: Jackass (n.) The male ass; a donkey.
Bed Screw :: Bed screw () A form of jack screw for lifting large bodies, and assisting in launching..
Jack :: "Jack (n.) An impertinent or silly fellow; a simpleton; a boor; a clown; also, a servant; a rustic..
Jack :: "Jack (n.) A large tree, the Artocarpus integrifolia, common in the East Indies, closely allied to the breadfruit, from which it differs in having its leaves entire. The fruit is of great size, weighing from thirty to forty pounds, and through its soft fibrous matter are scattered the seeds, which are roasted and eaten. The wood is of a yellow color, fine grain, and rather heavy, and is much used in cabinetwork. It is also used for dyeing a brilliant yellow..
Jack :: "Jack (n.) A large, California rock fish (Sebastodes paucispinus); -- called also boccaccio, and merou..
Jane-of-apes :: "Jane-of-apes (n.) A silly, pert girl; -- corresponding to jackanapes..
Jackscrew :: "Jackscrew (n.) A jack in which a screw is used for lifting, or exerting pressure. See Illust. of 2d Jack, n., 5..
Jackwood :: "Jackwood (n.) Wood of the jack (Artocarpus integrifolia), used in cabinetwork..
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..
Jackpudding :: Jackpudding (n.) A merry-andrew; a buffoon.
Jack :: Jack (n.) A machine for slicking or pebbling leather.
Varlet :: Varlet (n.) In a pack of playing cards, the court card now called the knave, or jack..
Straight :: Straight (superl.) Composed of cards which constitute a regular sequence, as the ace, king, queen, jack, and ten-spot; as, a straight hand; a straight flush..
Jacksnipe :: "Jacksnipe (n.) A small American sandpiper (Tringa maculata); -- called also pectoral sandpiper, and grass snipe..
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