A shrubby plant, Solanum dulcamara.

(idiomatic, informal) Stay awake throughout the night, usually when working or studying.

(Britain) bachelor party

For the period of an entire night.

A school, typically used for the purpose of continuing education with classes held predominantly in the evening to accommodate students with typical day shift work schedules.

Alternative form of watchnight

Alternative form of watchnight.

The nightingale, Luscinia megarhynchos.

Luscinia luscinia, a small passerine bird related to the common nightingale.

A period of darkness that occurs in winter in polar regions north from the Arctic Circle and south from the Antarctic Circle, and during which the sun stays below the horizon.