Black-jack
Black´-jack`
| n. | 1.(Min.) A name given by English miners to sphalerite, or zinc blende; - called also false galena. See Blende. | 2.Caramel or burnt sugar, used to color wines, spirits, ground coffee, etc. | 3.A large leather vessel for beer, etc. | 4.(Bot.) The Quercus nigra, or barren oak. | 5.The ensign of a pirate. |