A British version of the game bingo, or a lively celebration or party.
British slang, possibly from 'bean' (in British dialect, 'beano' was associated with bean feasts—celebratory meals). First recorded in early 20th-century English. The gaming meaning became standard.
Beano is still hugely popular in the UK where it's often played at working-men's clubs and charity events, preserving a social tradition that dates back over a century, while in America the same game is called bingo.
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