vi. 1. [techspeak] On a timesharing system, a process that relinquishes its claim on the scheduler until some given event occurs or a specified time delay elapses is said to 'go to sleep'.
2. In jargon, used very similarly to v. block; also in 'sleep on', syn. with 'block on'. Often used to indicate that the speaker has relinquished a demand for resources until some (possibly unspecified) external event:
"They can't get the fix I've been asking for into the next release, so I'm going to sleep on it until the release, then start hassling them again."