a man or fellow

a sailor

the male of certain animals, esp of the ass or donkey

a mechanical or hydraulic device for exerting a large force, esp to raise a heavy weight such as a motor vehicle

any of several mechanical devices that replace manpower, such as a contrivance for rotating meat on a spit

one of four playing cards in a pack, one for each suit, bearing the picture of a young prince; knave

a small usually white bowl at which the players aim with their own bowls

a female socket with two or more terminals designed to receive a male plug (jack plug) that either makes or breaks the circuit or circuits

a flag, esp a small flag flown at the bow of a ship indicating the ship's nationality

either of a pair of crosstrees at the head of a topgallant mast used as standoffs for the royal shrouds

a part of the action of a harpsichord, consisting of a fork-shaped device on the end of a pivoted lever on which a plectrum is mounted

any of various tropical and subtropical carangid fishes, esp those of the genus Caranx, such as C. hippos (crevalle jack)

one of the pieces used in the game of jacks

to lift or push (an object) with a jack

to connect (an electronic device) with another by means of a jack and a jack plug

to hunt (fish or game) by seeking them out or dazzling them with a flashlight