to sleep for a short time; doze.

to be off one's guard

The question caught him napping.

to sleep or doze through (a period of time, an activity, etc.) (usually fol. by away )

I napped the afternoon away. He naps away most of his classes.

a brief period of sleep, esp. one taken during daytime

Has the baby had her nap?

noun

break , catnap , doze , few z’s , forty winks * , interlude , intermission , microsleep , nod , pause , respite , rest , shuteye , siesta , snooze * , spot , down , feel , fiber , grit , outside , pile , roughness , shag , smoothness , surface , tooth , wale , warp , weave , weft , woof , snooze

verb

catch forty winks , catnap , doze , drop off * , drowse , get some shut-eye , grab some z’s , nod , nod off , rack * , relax , rest , sleep , snooze , take a siesta , take a snooze , siesta , break , fluff , forty winks , fuzz , pile , pour , respite , shag , shuteye , slumber , wink