(idiomatic) A person whose preference or custom is to remain awake and active during the evening and early morning (night) hours, and who usually sleeps during part of the daytime.

plural of amateur night

(Sussex) A night several days before Bonfire Night in which members of a bonfire society congregate at their headquarters (usually a pub) to be initiated with the current year's badges and receive information on the upcoming event.

(US, Australia, New Zealand) A hen night.

plural of lady of the night

plural of night blindness

plural of night hawk

plural of night bird

plural of night glass

plural of night-glass