Sleep before midnight.
A very short light nap. cat nap
ETYM Old Eng. noppe, as. hnoppa; akin to Dutch nop, Dan. noppe, lg. nobbe.
(Homonym: knap).
1. A short sleep (usually not in bed); SYN. catnap, cat sleep, forty winks, short sleep, snooze.
2. A soft or fuzzy surface texture.