Pronunciation

change

Singular
blackjack

Plural
blackjacks

  1. Blackjack is a card game. The aim is to try to get as near as possible to 21 points, but not get more than 21.
    We played blackjack at the casino
  2. In the game blackjack, blackjack is a score of twenty with two cards (king, queen or jack) and an ace.
    I got blackjack, but so did the dealer so I lost my money.