Bingo
1920s (as exclamation): of unknown origin.
wiktionary
Alternate form of bing, suggesting a ringing sound. Attested since 1925.
Perhaps related to stingo.
etymonline
bingo (n.)
lotto-like game of chance, 1924; many theories about its origin, none satisfying; the most likely is bingo! as an exclamation of sudden realization or surprise (attested from 1923). Uncertain connection to the slang word for "brandy" (1690s); attested as "liquor" in American English from 1861. Thomas Chandler Haliburton ("Sam Slick") in "The Americans at Home" (1854) recounts a story of a drinking game in which the children's song about the farmer's dog was sung and when it came time to spell out the name, every participant had to take a letter in turn, and anyone who missed or flubbed had to drink.
