The ability, either naturally, by technology or by superpowers, to see in a low light or even dark environment.

To spend a night at someone else's home.

plural of night watchman

A bird active at night, sometimes identified with a specific species such as a night owl or nightjar, and sometimes seen as a separate animal in its own right.

plural of night person

plural of night owl

plural of one-night stand

Synonym of one-night stand (single evening's performance) / Synonym of one-night stand (single sexual encounter)

Used other than figuratively or idiomatically: see work, nights. / (euphemistic) To work as a prostitute.

Alternative spelling of night shift