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conk off

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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

conk off

in. to fall asleep. I conked off about midnight.

See also: conk, off