Pronunciation: (nīt),[key] —n. 1. the period of darkness between sunset and sunrise.
2. the beginning of this period; nightfall.
3. the darkness of night; the dark.
4. a condition or time of obscurity, ignorance, sinfulness, misfortune, etc.: the long night of European history known as the Dark Ages. 5. (sometimes cap.) an evening used or set aside for a particular event, celebration, or other special purpose: a night on the town; poker night; New Year's Night. 6. night and day, unceasingly; continually: She worked night and day until the job was done.
—adj. 1. of or pertaining to night: the night hours. 2. occurring, appearing, or seen at night: a night raid; a night bloomer. 3. used or designed to be used at night: to take a night coach; the night entrance. 4. working at night: night nurse; the night shift. 5. active at night: the night feeders of the jungle.