From WordNet (r) 3.0 (2006):
sleep
n 1: a natural and periodic state of rest during which
consciousness of the world is suspended; "he didn't get
enough sleep last night"; "calm as a child in dreamless
slumber" [syn: sleep, slumber]
2: a torpid state resembling deep sleep [syn: sleep, sopor]
3: a period of time spent sleeping; "he felt better after a
little sleep"; "there wasn't time for a nap" [syn: sleep,
nap]
4: euphemisms for death (based on an analogy between lying in a
bed and in a tomb); "she was laid to rest beside her
husband"; "they had to put their family pet to sleep" [syn:
rest, eternal rest, sleep, eternal sleep, quietus]
v 1: be asleep [syn: sleep, kip, slumber, log Z's,
catch some Z's] [ant: wake]
2: be able to accommodate for sleeping; "This tent sleeps six
people"