noun
- A common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets.
- synonyms: blackjack oak, jack oak, Quercus marilandica
- A piece of metal covered by leather with a flexible handle; used for hitting people.
- A flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship.
- synonyms: black flag, pirate flag, Jolly Roger
- A gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21.
- synonyms: twenty-one, vingt-et-un
verb
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). blackjack. Retrieved September 20, 2026, from http://smartdefine.org/blackjack/definitions/1190714 |
| Chicago | WordNet. 2010. "blackjack" http://smartdefine.org/blackjack/definitions/1190714 (accessed September 20, 2026). |
| Harvard | WordNet 2010, blackjack, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/blackjack/definitions/1190714>. |
| MLA | WordNet. "blackjack" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/blackjack/definitions/1190714> |