night

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The period between sunset and sunrise, especially the hours of darkness.
2. n. This period considered as a unit of time: for two nights running.
3. n. This period considered from its conditions: a rainy night.
4. n. The period between dusk and midnight of a given day: either late Thursday night or early Friday morning.
5. n. The period between evening and bedtime.
6. n. This period considered from its activities: a night at the opera.
7. n. This period set aside for a specific purpose: Parents' Night at school.
8. n. The period between bedtime and morning: spent the night at a motel.
9. n. One's sleep during this period: had a restless night.
10. n. Nightfall: worked from morning to night.
11. n. Darkness: vanished into the night.
12. n. A time or condition of gloom, obscurity, ignorance, or despair: "In a real dark night of the soul it is always three o'clock in the morning” ( F. Scott Fitzgerald).
13. n. A time or condition marked by absence of moral or ethical values: "He never would have let us go untroubled into the night of private greed” ( Anthony Lewis).
14. adj. Of or relating to the night: the night air.
15. adj. Intended for use at night: a night light.
16. adj. Working during the night: the night nurse.
17. adj. Active chiefly at night: night prowlers.
18. adj. Occurring after dark: night baseball.

Century Dictionary and Cyclopedia

1. n. The dark half of the day; that part of the complete day during which the sun is below the horizon; the time from sunset to sunrise. See day.
2. n. Evening; nightfall; the end of the day: as, he came home at night.
3. n. Figuratively, a state or time of darkness, depression, misfortune, or the like. A state of ignorance; intellectual darkness: as, the night of the middle ages.
4. n. The darkness of death or the grave.
5. n. A time of sadness or sorrow; a dreary period.
6. n. Old age.
7. To grow dark; approach toward night.

Wiktionary

1. n. countable The period between sunset and sunrise, when a location faces far away from the sun, thus when the sky is dark.
2. n. countable An evening or night spent at a particular activity.
3. n. countable A night (and part of the days before and after it) spent in a hotel or other accommodation.
4. n. uncountable Nightfall.
5. n. uncountable Darkness.
6. n. uncountable a dark blue colour, midnight blue.
7. interj. Short for good night
8. v. To spend a night (in a place), to overnight.

GNU Webster's 1913

1. n. That part of the natural day when the sun is beneath the horizon, or the time from sunset to sunrise; esp., the time between dusk and dawn, when there is no light of the sun, but only moonlight, starlight, or artificial light.
2. n. Darkness; obscurity; concealment.
3. n. Intellectual and moral darkness; ignorance.
4. n. A state of affliction; adversity; as, a dreary night of sorrow.
5. n. The period after the close of life; death.
6. n. A lifeless or unenlivened period, as when nature seems to sleep.

WordNet 3.0

1. n. the period spent sleeping
2. n. the dark part of the diurnal cycle considered a time unit
3. n. Roman goddess of night; daughter of Erebus; counterpart of Greek Nyx
4. n. the time between sunset and midnight
5. n. a shortening of nightfall
6. n. the time after sunset and before sunrise while it is dark outside
7. n. a period of ignorance or backwardness or gloom
8. n. darkness.