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An imitation of the sound that an antique cash register would make, often used when discussing financial matters or transactions, especially some form of profit. We've posted some excellent sales numbers this holiday season—cha-ching!
slang A friendly, jocular greeting, derived from the archaic phrase "what cheer." Primarily heard in UK. Wotcha, me old codger! It's been donkey's ears since I saw you last!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.