Synonyms of jack

1 slang something (as pieces of stamped metal or printed paper) customarily and legally used as a medium of exchange, a measure of value, or a means of payment
  • I'd buy that watch, but I don't have the jack right now

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2 a piece of cloth with a special design that is used as an emblem or for signaling
  • a Portuguese ship flying the national jack

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3 an adult male human being
  • hey, jack, can you spare some change?

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4 one who operates or navigates a seagoing vessel
  • the streets of the old seaport were once full of jacks, harlots, and other dockside denizens

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5 the total of the bets at stake at one time
  • tension was mounting as the jack was getting bigger by the minute

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6 a person whose job is to cut down trees
  • we'll need to hire more jacks to get this forest cleared before winter

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Time Traveler for jack

Time Traveler

The first known use of jack was in 1548

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Cite this Entry

“Jack.” Thesaurus, Merriam-Webster, Accessed 13 Aug. 2020.

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More from Merriam-Webster on jack

Dictionary: Definition of jack

Spanish Central: Translation of jack

Nglish: Translation of jack for Spanish Speakers

Britannica English: Translation of jack for Arabic Speakers Encyclopedia article about jack

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