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(1)   Male donkey
(2)   Any of several fast-swimming predacious fishes of tropical to warm temperate seas
(3)   Tool for exerting pressure or lifting
(4)   One of four face cards in a deck bearing a picture of a young prince
(5)   Small flag indicating a ship's nationality
(6)   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
(7)   An electrical device consisting of a connector socket designed for the insertion of a plug
(8)   A small ball at which players aim in lawn bowling
(9)   Immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted
(10)   Someone who works with their hands; someone engaged in manual labor
(11)   A man who serves as a sailor
(12)   A small worthless amount
"You don't know jack"


(13)   Hunt with a jacklight
(14)   Lift with a special device
"Jack up the car so you can change the tire"

Etymology 1

Popular pet form of John through a Middle English form Jankin; rarely also an anglicized form of Jacques (equivalent of Jacob and James). Though the name was originally a pet form, it has become more of an independent name.

Proper noun

  1. , also used as a pet form of John.

  • ~1593 William Shakespeare: Richard III: Act I, Scene III:
    Since every Jack became a gentleman
    there's many a gentle person made a Jack.
  • 1895 Oscar Wilde: The Importance of Being Earnest:
JACK. Well, really, Gwendolen, I must say that I think that there are lots of other much nicer names. I think Jack, for instance, a charming name.
GWENDOLEN. Jack?...No, there is very little music in the name Jack, if any at all, indeed. It does not thrill. It produces absolutely no vibrations...I have known several Jacks, and they all, without exception, were more than usually plain. Besides, Jack is a notorious domesticity for John!