black-jack > define
- (n.) The Quercus nigra or barren oak.
- (n.) Caramel or burnt sugar, used to color wines, spirits, ground coffee, etc.
- (n.) The ensign of a pirate.
- (n.) A name given by English miners to sphalerite or zinc blende; -- called also false galena. See Blende.
- (n.) A large leather vessel for beer, etc.
by Webster's Revised Unabridged Dictionary