conk out


verb (intr, adverb) informal

(of machines, cars, etc) to fail suddenly
to tire suddenly or collapse, as from exhaustion

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Word Origin for conk out

C20: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with conk out

conk out

1

Stop functioning, fail, as in The engine finally conked out. [Colloquial; early 1900s]

2

Fall asleep, as in Every evening he conked out in front of the television set. [1940s]

3

Faint or collapse, as in I don't know if it was the heat, but she suddenly conked out. [1920s]

4

Die, as in He's paranoid about conking out and he's only twenty! [Late 1920s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.