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

Synonym(s): doodly-squat, diddly-squat, diddlysquat, diddly-shit, diddlyshit, diddly, diddley, squat, shit

Hypernym(s): small_indefinite_quantity, small_indefinite_amount

· a man who serves as a sailor

Synonym(s): mariner, seaman, tar, Jack-tar, Jack, old_salt, seafarer, gob, sea_dog

Hypernym(s): sailor, crewman

· someone who works with their hands; someone engaged in manual labor

Synonym(s): laborer, manual_laborer, labourer

Hypernym(s): workman, workingman, working_man, working_person

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

Synonym(s): jackfruit, jak

Hypernym(s): edible_fruit

· a small ball at which players aim in lawn bowling

Hypernym(s): ball

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

Hypernym(s): electrical_device

· 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

Synonym(s): jackstones

Hypernym(s): game_equipment

· small flag indicating a ship's nationality

Hypernym(s): flag

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

Synonym(s): knave

Hypernym(s): face_card, picture_card, court_card

· tool for exerting pressure or lifting

Hypernym(s): tool

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

Hypernym(s): carangid_fish, carangid

· male donkey

Synonym(s): jackass

Hypernym(s): ass

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

Synonym(s): jack_up

Hypernym(s): raise, lift, elevate, get_up, bring_up

· hunt with a jacklight

Synonym(s): jacklight

Hypernym(s): hunt, run, hunt_down, track_down