black jack

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)

   Synonyms: black canker, black palmer, nigger

   • 1807, Richard Parkinson, The Experienced Farmer, Enlarged and Improved, page 370:

     There is a sort of black caterpillar called a black jack, which is seldom seen; but when they do come, they make terrible havock.

4. (mining, mineralogy) Sphalerite.
5. A tufted or ring-necked scaup duck (Aythya collaris).
6. Alternative form of blackjack.
7. Used other than figuratively or idiomatically: see black,‎ jack.

• (2) Caranx lugubris
• (3) Bidens pilosa
• (4) a larva of Athalia rosae
• (5) calcite-sphalerite
• (6) Aythya collaris

• “black jack”, in OneLook Dictionary Search.
• black jack on Wikipedia.Wikipedia

Unadapted borrowing from English blackjack.

• IPA^(key): /blɛɡˈd͡ʐɛk/
• Rhymes: -ɛk
• Syllabification: [please specify syllabification manually]

black jack m animal

1. (card games) alternative spelling of blackjack

• “black jack”, in Wielki słownik języka polskiego‎^[1] (in Polish), Instytut Języka Polskiego PAN
• “black jack”, in Polish dictionaries at PWN‎^[2] (in Polish)