black-jack

See also: blackjack, Blackjack, Black Jack, and black jack

English

Noun

black-jack (countable and uncountable, plural black-jacks)

1. (uncountable, obsolete, mineralogy, UK) Sphalerite; zincblende.
2. (uncountable, obsolete) Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc.
3. (obsolete) A large leather vessel for beer, etc.
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).
7. A larva of a sawfly of species Athalia rosae (syns. Athalia centifolia, A. spinarum).

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “black-jack”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)

References

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