| black-jack | 1. <chemical> A name given by English miners to sphalerite, or zinc blende; called also false galena. See Blende. 2. Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc. 3. A large leather vessel for beer, etc. 4. <botany> The Quercus nigra, or barren oak. 5. The ensign of a pirate. Source: Websters Dictionary (01 Mar 1998) |
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