Definition of "sleep on"

sleep on

verb
third-person singular simple present sleeps on, present participle sleeping on, simple past and past participle slept on
1. (idiomatic) To postpone (a decision) at least overnight, to avoid making a hasty choice.
2. (idiomatic, slang) To miss or ignore; to underappreciate; to underestimate the quality of something.
3. Used other than figuratively or idiomatically: see sleep,‎ on.