The card game blackjack.
- ‘In my first term at prep school, I was introduced to vingt-et-un.’
- ‘During the next century, French colonists brought the game of vingt-et-un across the ocean to Canada and the United States, and the game started making regular appearances in North American casinos in the early twentieth century.’
- ‘The older adults played vingt-et-un (Twenty-one) or other card games while the young danced and engaged in flirtations until the party dispersed near daybreak.’
French, literally twenty-one.