Word.ws English Dictionary

black jacks

black jacks is the plural of black jack.

Meaning of black jack

Noun

black jack (countable and uncountable, plural black jacks)

  1. Any of certain species of Caranx of gamefish, including C. latus and C. crysos, but especially Caranx lugubris.
  2. Certain beggarticks (Bidens spp.), especially Bidens pilosa.
  3. (obsolete) Larva of a turnip sawfly (Athalia rosae)
    • There is a sort of black caterpillar called a black jack, which is seldom seen; but when they do come, they make terrible havock.1807, Richard Parkinson, The Experienced Farmer, Enlarged and Improved, page 370
  4. Sphalerite.
  5. A tufted or ring-necked scaup duck (Aythya collaris).
  6. Used other than figuratively or idiomatically: see black, jack.

See all 7 meanings of black jack

Questions about black jacks

What is black jacks the plural of?
Black jacks is the plural of black jack.

Words near black jacks in the dictionary

  1. Black Irish
  2. black iron
  3. Black Isle
  4. black ivory
  5. black jack
  6. black jacks
  7. black jail
  8. black jails
  9. black jaundice
  10. Black Joe cake
  11. Black Joe cakes

Source and license

Adapted from Wiktionary: black jacks (page history and authors); black jack (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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