Definition of blackjack in English:

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blackjack

Pronunciation: /ˈblakdʒak/

noun

1 [mass noun] chiefly North American A gambling card game in which players try to acquire cards with a face value totalling 21 and no more. Also called pontoon2, vingt-et-un.
Example sentences
  • The site offers slots, roulette and animated card games including poker and blackjack.
  • In a game such as blackjack, an astute player can try to memorize the cards already played to have a better chance of predicting which cards will come up later.
  • These men attended and enjoyed spectator sports, bet on prize fights and wrestling matches, and gambled at poker, blackjack, and dice.
2A widely distributed weed related to the bur-marigold, with barbed black seeds.
Perhaps from sense 3, drawing a comparison between the shape of the seeds and a bludgeon
  • Bidens pilosa, family Compositae
Example sentences
  • It spends some of its time removing weeds like kakiebos, blackjacks and bugweed, perpetual problems in any areas that birds fly over, dropping seeds.
3North American A flexible lead-filled truncheon.
Example sentences
  • Firehoses were turned on and soon three thousand picketers, thugs, and police rumbled in the streets with clubs, blackjacks, wrenches, chains, and tear gas.
  • Bats, clubs, sticks, blackjacks, Brazilian fighting rods, rocks, and Japanese club sticks are just a few of the more favored tools used in beating people to a pulp.
  • Johnigan folded in half over the keyboard, giving Al the chance to bang him hard on the back of the head with a lead-weighted blackjack.
4 historical A pirates' black ensign.
5 historical A tar-coated leather container used to hold beer.

For editors and proofreaders

Line breaks: black|jack

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