blackjack

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A leather-covered bludgeon with a short, flexible shaft or strap, used as a hand weapon.
• noun 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.
• noun Sphalerite.
• transitive verb To hit or beat with a blackjack.
• transitive verb To coerce by threats.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun card games A common gambling card game in casinos, where the object is to get as close to 21 without going over.
• noun card games A hand in the game of blackjack consisting of a face card and an ace.
• noun 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".
• noun a small, flat, blunt, usually leather-covered instrument loaded with heavy material such as lead or ball bearings.
• noun a type of weed, Bidens pilosa, in the family Compositae.
• verb To strike with a blackjack or similar weapon.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb exert pressure on someone through threats
• noun a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
• noun 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
• noun a piece of metal covered by leather with a flexible handle; used for hitting people
• 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