Wiktionary
vb. 1 (context intransitive informal English) to fall fast asleep; to sleep soundly 2 (context intransitive informal English) to stop functioning 3 (context intransitive informal English) to die
WordNet
v. stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident" [syn: fail, go bad, give way, die, give out, go, break, break down]
use up all one's strength and energy and stop working; "At the end of the march, I pooped out" [syn: poop out, peter out, run down, run out]
Usage examples of "conk out".
Maybe we can finish those subspace field calculations before I conk out completely.
He could go for several days on short rations of sleep, then conk out when he least expected it.
Somebody else came to the house last night when he was full of whisky, took his keys and his wallet off him, shoved him into the garage and set the engine running so he'd conk out, and took what was wanted of all he'd got.
I plan to sleep during most of this flight, so I won't conk out at Ontario.
For even Christian Dietrich Grabbe refused to conk out in this hole, and preferred Detmold.
She doesn't seem to be around when they arrive, but while they wait they eat the bait and conk out-very clever.
Now it's the radio, and there was no reason for the motors to conk out like they did.
She and Galahad would stretch out in her sleep chair and conk out for the rest of the night.
The trouble was that whenever he found a few minutes to conk out, he couldn't.