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. (UK, obsolete, uncountable) Sphalerite; zincblende.
  2. (obsolete, uncountable) Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc.
  3. (obsolete) A large leather vessel for beer, etc.
    • ‘Oh yes, we’ll probably be wolfing down pasty jambics and swigging away at great black jacks of swingeing ale in no time now,’ he went on heartly.1936, Norman Lindsay, The Flyaway Highway, Sydney: Angus and Robertson, page 35
  4. (obsolete) A water oak or barren oak (Quercus nigra).
  5. (obsolete, circa 1700s) A native African longshoreman or sailor working on a boat.
  6. A coalfish (Pollachius virens).

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-hooded antshrikes
  2. black-house
  3. black-houses
  4. black-humored
  5. black-jack
  6. black-jacks
  7. black-legged kittiwake
  8. black-legged kittiwakes
  9. black-legged tick
  10. black-legged ticks
  11. black-letter

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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Cite this entry: “black-jacks.” Word.ws, https://word.ws/black-jacks. Based on Wiktionary, CC BY-SA 4.0.