blackjack

UK: ˈblækdʒæk | US: ˈblækdʒæk

Definition
  1. n. a gambling card game where players aim to reach a hand value of 21 without exceeding it

  2. n. a small, leather-covered club or weapon

  3. n. (historical) a tar-coated leather jug or container

Structure
black <dark color>jack <man or tool>
Etymology

The word "blackjack" originated in the 16th century, combining "black" (referring to the dark color of tar or leather) and "jack" (a term for a man or tool, derived from the name "Jack"). Initially, it described a tar-coated leather jug. By the 18th century, it evolved to denote a small leather club, likely due to its dark appearance. The card game sense emerged in the early 20th century, possibly referencing the game's association with the "black" color of spades/clubs or the bonus for a black Jack (Jack of Spades/Clubs).

Examples
  1. He lost $200 playing blackjack at the casino last night.

  2. The security guard carried a blackjack for protection.

  3. In colonial times, sailors used blackjacks to hold their ale.

  4. She dealt a perfect blackjack with an ace and a queen.

  5. The museum displayed an antique blackjack from the 1700s.