1.a small worthless amount;
you don't know jack
2.someone who works with their hands; someone engaged in manual labor
3.immense East Indian fruit resembling breadfruit of; its seeds are commonly roasted
4.an electrical device consisting of a connector socket designed for the insertion of a plug
5.game equipment consisting of one of several small objects picked up while bouncing a ball in the game of jacks
6.small flag indicating a ship's nationality
7.one of four face cards in a deck bearing a picture of a young prince
8.tool for exerting pressure or lifting
9.any of several fast-swimming predacious fishes of tropical to warm-temperate seas
10. male donkey
1.lift with a special device;
jack up the car so you can change the tire
2.hunt with a jacklight