Black-jack
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Sphalerite; zincblende. UK, obsolete, uncountable
- 2 Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc. obsolete, uncountable
- 3 A large leather vessel for beer, etc. countable, obsolete, uncountable
- 4 A water oak or barren oak (Quercus nigra). countable, obsolete, uncountable
- 5 A native African longshoreman or sailor working on a boat. countable, obsolete, uncountable
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- 6 A coalfish (Pollachius virens). countable, uncountable
- 7 A larva of a sawfly of species Athalia rosae (syns. Athalia centifolia, A. spinarum). countable, uncountable
- 8 Alternative form of blackjack. alt-of, alternative, countable, uncountable
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.