night definition

1. the time after sunset and before sunrise while it is dark outside
2. a period of ignorance or backwardness or gloom
3. the period spent sleeping
• examples: I had a restless night
4. the dark part of the diurnal cycle considered a time unit
• examples: three nights later he collapsed
5. darkness
• examples: it vanished into the night
6. a shortening of nightfall
• examples: they worked from morning to night
7. the time between sunset and midnight
• examples: he watched television every night