(slang, offensive) A cash register.
Seeing Joe Rubin, someone would yell to Ogy, the bartender, as he rang up a cash register sale, "Play that Jewish piano, Ogy. Make the Jewish piano sing.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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