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.

Egyptian darkness Erebus all the time all-night blackness ceaselessly charcoal coal continually continuously crow dark dark of night darkness darkness visible dead of night dusk ebon ebony endlessly evening evensong eventide gloaming incessantly ink intense darkness jet lightlessness midnight moonlessness night and day night-fallen nightfall nightlong nightly nighttide nighttime nocturnal obscure obscure darkness obscurity pitch pitch-darkness pitchy darkness raven round-the-clock sable night sloe smoke smut soot starlessness sundown sunlessness sunset swarthiness tar tenebrosity tenebrousness the palpable obscure total darkness twilight unceasingly unendingly velvet darkness vespers