Plural of bingo; multiple games of the number-calling game, or multiple successful situations where someone gets what they wanted.
From 'bingo,' the game which has obscure origins but emerged in 1920s American gambling culture. The plural simply adds '-s' to indicate multiple games or instances.
The word 'bingo' itself is an onomatopoeia (bing + o) that was trademarked, yet became so popular that the trademark was lost—showing how game designers can accidentally create words that become part of common speech.
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