(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.) The period after the close of life; death.
(5):
(n.) A state of affliction; adversity; as, a dreary night of sorrow.
(6):
(n.) A lifeless or unenlivened period, as when nature seems to sleep.