verb (intr, adverb) informal
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Word Origin for conk out
Idioms and Phrases with conk out
Stop functioning, fail, as in The engine finally conked out. [Colloquial; early 1900s]
Fall asleep, as in Every evening he conked out in front of the television set. [1940s]
Faint or collapse, as in I don't know if it was the heat, but she suddenly conked out. [1920s]
Die, as in He's paranoid about conking out and he's only twenty! [Late 1920s]