"nights" in the noun sense
1. night, nighttime, dark
the time after sunset and before sunrise while it is dark outside
2. night
a period of ignorance or backwardness or gloom
3. night
the period spent sleeping
"I had a restless night"
4. night
the dark part of the diurnal cycle considered a time unit
"three nights later he collapsed"
5. night
darkness
"it vanished into the night"
6. night
a shortening of nightfall
"they worked from morning to night"
7. night
the time between sunset and midnight
"he watched television every night"
8. Nox, Night
Roman goddess of night daughter of Erebus counterpart of Greek Nyx
Source: WordNet® (An amazing lexical database of English)
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