Definitions for jack

(a small worthless amount; "you don't know jack")

(a man who serves as a sailor)

(someone who works with their hands; someone engaged in manual labor)

(immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted)

(a small ball at which players aim in lawn bowling)

(an electrical device consisting of a connector socket designed for the insertion of a plug)

(game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks)

(small flag indicating a ship's nationality)

(one of four face cards in a deck bearing a picture of a young prince)

(tool for exerting pressure or lifting)

(any of several fast-swimming predacious fishes of tropical to warm temperate seas)

(male donkey)

(lift with a special device; "jack up the car so you can change the tire")

(hunt with a jacklight)