Night

adj. of the period of time between sunset and sunrise; of night; pertaining to the end of the evening

n. period of time between sunset and sunrise; darkness; end of the evening

Night or nighttime is the period of time when the sun is below the horizon. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). Time of day varies based on factors such as season, latitude, longitude and timezone.
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Noun
1. Roman goddess of night; daughter of Erebus; counterpart of Greek Nyx
(synonym) Nox
(hypernym) Roman deity

Noun
1. the time after sunset and before sunrise while it is dark outside
(synonym) nighttime, dark
(antonym) day, daytime, daylight
(hypernym) time period, period of time, period
(hyponym) weeknight
(part-holonym) day, twenty-four hours, solar day, mean solar day
(part-meronym) evening
2. the time between sunset and midnight; "he watched television every night"
(hypernym) time period, period of time, period
3. the period spent sleeping; "I had a restless night"
(hypernym) time period, period of time, period
4. the dark part of the diurnal cycle considered a time unit; "three nights later he collapsed"
(hypernym) time unit, unit of time
5. darkness; "it vanished into the night"
(hypernym) dark, darkness
6. a shortening of nightfall; "they worked from morning to night"
(hypernym) twilight, dusk, gloaming, nightfall, evenfall, fall, crepuscule, crepuscle
7. a period of ignorance or backwardness or gloom
(hypernym) time period, period of time, period

(n.)
The period after the close of life; death.
  

(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.
  

(n.)
Intellectual and moral darkness; ignorance.
  

(n.)
Darkness; obscurity; concealment.
  

(n.)
A state of affliction; adversity; as, a dreary night of sorrow.
  

(n.)
A lifeless or unenlivened period, as when nature seems to sleep.
  

Night In ancient cosmogonies night is placed before day because these cosmogonies begin with the secondary cosmic creation; and the light which was then created was contrasted with what seemed, relatively, the eternal darkness of primary creation. For manifested light proceeds from absolute light, which by contrast has to be called darkness.
In a Hindu scheme, the first body of Brahma is called his body of night, and from it proceeded the three highest groups of pitris, the asuras or sons of wisdom; while the four lower classes of pitris proceeded from the body of twilight.
Night also refers to pralaya as in the Day and Night of Brahma. Night thus signifies that which precedes the opening, coming, and fulfillment of manifestation, called the day. These days and nights pertain directly to the coming into being of a universe, of which in boundless space the number is infinite. Thus, when a universe is in pralaya, it can be said to be in its night or time of sleep, yet surrounded by the illimitable kosmos itself infilled with universes in all phases of evolutionary growth.