- a large beer mug, formerly made of leather coated with tar
- black flag
- ⌂ a small, leather-covered bludgeon with a flexible handle
- ⌂ a SE U.S. scrub oak (Quercus marilandica) with fan-shaped leaves
- a gambling game at cards in which any player wins who gets cards totaling twenty-one points or less while the dealer gets either a smaller total or a total exceeding twenty-one points
- a combination of an ace and a face card or ten, equaling 21 points in this game
- sphalerite, esp. a dark varietyalso written black jack
Origin of blackjacksee jack
- to hit with a blackjack
- to force (a person) to do something by threatening, as if with a blackjack
- A leather-covered bludgeon with a short, flexible shaft or strap, used as a hand weapon.
- Games A card game in which the object is to accumulate cards with a higher count than that of the dealer but not exceeding 21. Also called twenty-one, vingt-et-un.
transitive verbblack·jacked, black·jack·ing, black·jacks
- To hit or beat with a blackjack.
- To coerce by threats.
- (card games) A common gambling card game in casinos, where the object is to get as close to 21 without going over.
- (card games) A hand in the game of blackjack consisting of a face card and an ace.
- The flag (i.e., a jack) traditionally flown by pirate ships; popularly thought to be a white skull and crossed bones on a black field (the Jolly Roger). In older literature sometimes spelled "black jack".
- A small, flat, blunt, usually leather-covered instrument loaded with heavy material such as lead or ball bearings.
- A type of weed, Bidens pilosa, in the family Compositae.
(third-person singular simple present blackjacks, present participle blackjacking, simple past and past participle blackjacked)
- To strike with a blackjack or similar weapon.
(countable and uncountable, plural black-jacks)
- (obsolete, mineralogy, UK) Sphalerite; zincblende.
- (obsolete) Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc.
- (obsolete) A large leather vessel for beer, etc.
- (obsolete) The Quercus nigra, or barren oak.
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 The imported definitions may be significantly out of date, and any more recent senses may be completely missing.