The night of Whitsunday.

plural of Whitsun-night

Walpurgisnacht ("Walpurga's night"), a feast of witchcraft in German folklore, observed on 30 April. / (by extension) Any orgiastic or bacchanalian party.

A regular night on which a couple goes out on a date. For example, a couple may go on a date every Friday night.

plural of night out

plural of night terror

(colloquial, usually childish) Good night.

A regularly scheduled period of work, during evening or night hours. / A group of workers who work during the night.

(now only Caribbean) A (night-flying) bat. / (now literary) A ghost, an evil spirit. / (Jamaica) A large nocturnal moth.

A party held for a woman who is about to be married, normally attended only by female friends and relatives.