Open English Wordnet
Nouns
(n)night, nighttime, darkthe time after sunset and before sunrise while it is dark outside (n)nighta period of ignorance or backwardness or gloom (n)nightthe period spent sleeping“I had a restless night” (n)nightthe dark part of the diurnal cycle considered a time unit“three nights later he collapsed” (n)nightdarkness“it vanished into the night” (n)nighta shortening of nightfall“they worked from morning to night” (n)nightthe time between sunset and midnight“he watched television every night”