(noun, verb)


1. a small worthless amount

- you don't know jack

Similar word(s): diddley, diddly, diddlysquat, squat

Definition categories: quantity

2. a man who serves as a sailor

Similar word(s): gob, mariner, seafarer, seaman, tar

Definition categories: person, crewman, sailor

3. someone who works with their hands; someone engaged in manual labor

Similar word(s): laborer, labourer

Definition categories: person, workingman, workman

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

Similar word(s): jackfruit, jak

Definition categories: food

5. a small ball at which players aim in lawn bowling

Definition categories: man–made, ball

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

Definition categories: man–made

7. 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

Similar word(s): jackstones

Definition categories: man–made

8. small flag indicating a ship's nationality

Definition categories: man–made, flag

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

Similar word(s): knave

Definition categories: man–made

10. tool for exerting pressure or lifting

Definition categories: man–made, tool

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

Definition categories: animal, carangid

12. male donkey

Similar word(s): jackass

Definition categories: animal

Sentences with jack as a noun:

- She used a jack to lift her car and changed the tire.

- Every man jack.

- telephone jack

- You haven't done jack. Get up and get this room cleaned up right now!


1. lift with a special device

- jack up the car so you can change the tire

Definition categories: contact, elevate, lift, raise

2. hunt with a jacklight

Similar word(s): jacklight

Definition categories: competition, hunt, run

Sentences with jack as a verb:

- He jacked the car up so that he could replace the brake pads.

- If you want to jack your stats you just write off failures as invalid results.

- Someone jacked my car last night!