Antonym: jenny. Similar words: jacket, lumberjack, jack of all trades, backpack, adjacent, ejaculate, ACK, sack. Meaning: [dʒæk] 
n. 1. a small worthless amount 2. a man who serves as a sailor 3. someone who works with their hands; someone engaged in manual labor 4. immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted 5. a small ball at which players aim in lawn bowling 6. an electrical device consisting of a connector socket designed for the insertion of a plug 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 8. small flag indicating a ship's nationality 9. one of four face cards in a deck bearing a picture of a young prince 10. tool for exerting pressure or lifting 11. any of several fast-swimming predacious fishes of tropical to warm temperate seas 12. male donkey. v. 1. lift with a special device 2. hunt with a jacklight.
n. 1. a small worthless amount 2. a man who serves as a sailor 3. someone who works with their hands; someone engaged in manual labor 4. immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted 5. a small ball at which players aim in lawn bowling 6. an electrical device consisting of a connector socket designed for the insertion of a plug 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 8. small flag indicating a ship's nationality 9. one of four face cards in a deck bearing a picture of a young prince 10. tool for exerting pressure or lifting 11. any of several fast-swimming predacious fishes of tropical to warm temperate seas 12. male donkey. v. 1. lift with a special device 2. hunt with a jacklight. 
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(91) Ben and Jack struggled together on the grass.
(92) Jack is shorter than Tom by a head.
(93) Jack showed off his latest squeeze at the weekend.
(94) Jack disobeyed his father and went to the cinema.sentencedict.com/jack.html
(95) What about Jack? We can't just leave him here.
(96) Jack came down the stairs two at a time.
(97) Jack dropped on Helen and surprised her.
(98) Every Jack has his Jill / Gill.
(99) Jack didn't receive much formal schooling.
(100) Jack encroached on Mary's private life.
(101) Jack had drunk too much in the party.
(102) She is going to jack this job in.
(103) Neither Jack nor I have seen this film.
(104) Jack took the news astonishingly well.
(105) Jack was man of the moment during the crisis.
(106) I doubt whether Jack could manage a sailing boat.
(107) Jack inclined his head very slightly.
(108) Jack strode masterfully into the room.
(109) Jack sounded quite cheerful about the idea.
(110) Jack was delivered of a sonnet on the subject.
(111) Jack stood on a rock for a better view.
(112) Jack turned against his old friends.
(113) Jack duffed his drive off the first tee.
(114) Jack enclasped her waist in his arm.
(115) She's going to jack this job in.
(116) I'm about played-out, Jack - it's time I retired.
(117) Jack had to bow out as a contender.
(118) Jack imprecated evil upon his enemies.
(119) After you with the newspaper, Jack.
(120) Jack tried to buy himself out of the army.