(literally) Going away from one's usual residence for an entire night, and returning the next day.

plural of night emission

An ejaculation or orgasm while asleep, often accompanied by an erotic dream.

(linguistics) A major language family of sub-Saharan Africa noted for the use of a noun class system.

(colloquial) An exclamation of praise or encouragement.

(idiomatic) Middle of the night.

(UK) Alternative form of all cats are grey in the dark

(US) Alternative form of all cats are grey in the dark

A warm cloth cap worn while sleeping, often with pajamas, being common attire in northern Europe before effective home heating became widespread. / A beverage drunk before bed that is usually alcoholic.

(intransitive) To drink an alcoholic beverage shortly before retiring to bed.