Princeton's WordNet

1. jack, doodly-squat, diddly-squat, diddlysquat, diddly-shit, diddlyshit, diddly, diddley, squat, shit(noun)

   a small worthless amount

   Synonyms:
   darn, knee bend, diddly-squat, seafarer, jackass, jack, seaman, tar, squatting, laborer, dickhead, squat, hoot, diddlyshit, mariner, dogshit, doodly-squat, gob, diddly-shit, prick, shit, jak, bastard, son of a bitch, crap, tinker's damn, damn, bullshit, sea dog, shite, jackstones, bull, horseshit, turd, dirt, asshole, diddly, shucks, diddlysquat, knave, cocksucker, red cent, tinker's dam, dump, labourer, diddley, poop, whoreson, manual laborer, old salt, jackfruit

2. mariner, seaman, tar, Jack-tar, Jack, old salt, seafarer, gob, sea dog(noun)

   a man who serves as a sailor

   Synonyms:
   seafarer, pitch, knave, diddlysquat, yap, jackass, maw, diddlyshit, shit, doodly-squat, old salt, tar, hole, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackstones, jackfruit, gob, manual laborer, diddly-squat, cakehole, trap, seaman, squat, diddly

3. laborer, manual laborer, labourer, jack(noun)

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

   Synonyms:
   laborer, knave, diddlysquat, jackass, diddlyshit, shit, doodly-squat, old salt, tar, diddly-shit, mariner, jack, diddley, labourer, sea dog, jak, jackstones, seafarer, jackfruit, gob, manual laborer, diddly-squat, seaman, squat, diddly

4. jackfruit, jak, jack(noun)

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

   Synonyms:
   jak, knave, diddlysquat, jackass, diddlyshit, shit, doodly-squat, old salt, tar, diddly-shit, mariner, jack, diddley, labourer, sea dog, laborer, jackfruit tree, jackstones, seafarer, jackfruit, gob, manual laborer, diddly-squat, seaman, squat, diddly

5. jack(noun)

   a small ball at which players aim in lawn bowling

   Synonyms:
   seafarer, knave, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, seaman, squat, diddly

6. jack(noun)

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

   Synonyms:
   seafarer, knave, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, seaman, squat, diddly

7. jack, jackstones(noun)

   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

   Synonyms:
   seafarer, knave, jack, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, knucklebones, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, jacks, seaman, squat, diddly

8. jack(noun)

   small flag indicating a ship's nationality

   Synonyms:
   seafarer, knave, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, seaman, squat, diddly

9. jack, knave(noun)

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

   Synonyms:
   seafarer, knave, jack, diddlysquat, scallywag, jackfruit, gob, shit, doodly-squat, old salt, tar, rogue, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, rascal, rapscallion, jackstones, scalawag, diddlyshit, manual laborer, diddly-squat, varlet, seaman, squat, diddly

10. jack(noun)

    tool for exerting pressure or lifting

    Synonyms:
    seafarer, knave, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, seaman, squat, diddly

11. jack(noun)

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

    Synonyms:
    seafarer, knave, diddlysquat, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, laborer, diddley, labourer, sea dog, jak, jackass, jackstones, diddlyshit, manual laborer, diddly-squat, seaman, squat, diddly

12. jack, jackass(verb)

    male donkey

    Synonyms:
    seafarer, knave, jack, diddlysquat, zany, goofball, fathead, jackfruit, gob, shit, doodly-squat, old salt, tar, diddly-shit, mariner, goose, laborer, diddley, labourer, sea dog, jak, jackass, bozo, jackstones, cuckoo, diddlyshit, manual laborer, diddly-squat, goof, twat, seaman, squat, diddly

13. jack, jack up(verb)

    lift with a special device

    Synonyms:
    jacklight, jack up, jack

14. jacklight, jack(verb)

    hunt with a jacklight

    Synonyms:
    jacklight, jack up, jack