conk off

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conk off

1. slang To fall asleep. He was so tired after his long day at work that he conked off during the movie.
2. slang Of a machine, to break or completely lose functionality. Judging by all that noise coming from her car, I'm pretty sure it's about to conk off. The blender stopped working again today—it must be ready to conk off.
See also: conk, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

conk off

 and conk out 
1. Sl. (from years ago.) to fall asleep. I conked off about midnight. I was so tired that I nearly conked off. I was afraid I would conk out while I was driving.
2. Sl. (always conk out.) [for something] to break down; to quit running. My car conked out finally. I hope my computer doesn't conk out.
See also: conk, off
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

conk off

in. to fall asleep. I conked off about midnight.
See also: conk, off
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
In its original teardown, iFixit claimed that a design flaw in the Galaxy Fold made the device vulnerable to conking off. It said that the phone has a gap between the screen and the edge of the device from where it folds.
The openers had put on 63 runs in 9 overs when there was a halt in play due to a floodlight tower conking off. Play was stopped for seventeen minutes before it resumed -- without any overs being deducted.
* You are satisfied with it: Yes, as long as it gets me from point 'A' to 'B' without conking off, I am satisfied with it.
With the voltage set to 1.2V, we could get the clock all the way up to 2800 MHz but we had problems with the benchmark runs conking off mid-way.
Chennai were 55 without loss after eight overs, when a sudden burst of wind resulted in some of the bulbs in each of the four light towers conking off at the Eden Gardens.
The Internet conking off doesn't mean that you should be slacking back on replying to your emails.