<p><strong>noun</strong></p><ul><li>a gambling game in which the object is to obtain from the dealer cards whose values add up to, or close to, 21 but do not exceed it.</li><li>a variety of this game in which any player can become dealer.</li><li>(in the game of blackjack) an ace together with a ten or a face card as the first two cards dealt.</li><li>a short, leather-covered club, consisting of a heavy head on a flexible handle, used as a weapon.</li><li>a small oak, <em>Quercus marilandica</em>, of the eastern United States, having a nearly black bark and a wood of little value except for fuel.</li><li>a large drinking cup or jug for beer, ale, etc., originally made of leather coated externally with tar.</li><li>caramel or burnt sugar for coloring spirits, vinegar, coffee, etc.</li><li>a dark, iron-rich variety of sphalerite.</li></ul><p><strong>verb</strong></p><ul><li>to strike or beat with a blackjack.</li><li>to compel by threat.</li></ul>