black-jack

Noun

 * 1)  Sphalerite; zincblende.
 * 2)  Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc.
 * 3)  A large leather vessel for beer, etc.
 * 4)  A water oak or.
 * 5)  A native African longshoreman or sailor working on a boat.
 * 6) A coalfish.
 * 7) A larva of a sawfly of species  (syns., ).