The night of the day after the present day.

A farewell said in the evening or before going to sleep. / (colloquial, dated) Expressing incredulity.

(literally) An owl (order Strigiformes) that is nocturnal. / (idiomatic) One who goes to bed late, or stays up late at night or in the early hours of the morning.

(obsolete) A loose robe worn as a nightgown.

Lasting throughout the whole night (or most of it)

(UK) Synonym of Guy Fawkes Night

A watch kept on some premises, or on a town, by guards during the night. / One or more of the guards on such a watch.

An event held on the evening of 25th January in celebration of the Scottish poet and lyricist Robert Burns (born on that day in 1759), usually involving Scottish foods and recitals of his poetry.

an unsigned leaflet distributed clandestinely

(chiefly in the plural) A wedding night on which consummation of the marriage is postponed.