plural of night watch

(historical) Prior to police forces, a person appointed by a town or city to walk the streets at night and guard the burghers from felons and robbers.

(euphemistic) A female prostitute. / Brunfelsia spp.

(idiomatic) To go to bed to sleep / (idiomatic) To cease what one has been doing for the night

(idiomatic) An event where patrons are enticed to buy entry tickets into some venue, for example a movie theater, with the anticipation that they will be entered into a drawing to win an amount of money if their ticket is drawn and they are on-site at the time of the winning.

(film) A cinematographic technique in which a crew films in a high-contrast situation, typically in the early morning or late afternoon, with a blue filter, causing the scene to look as if it were shot in moonlight.

(cinematography) In the daytime, with a blue filter, causing the scene to look as if it were shot in moonlight.

Alternative spelling of night glass

A spyglass or binoculars with large diameter lenses, used to see objects better in the dark.

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