An evening spent having an enjoyable time away from home, as in a restaurant, theater, bar, or other such locations. I never knew how much I would miss being able to have a night out once we had kids. Hey John, some people in the office are planning a night out this Friday. Would you like to join us?

To work in the evenings, as opposed to during the day. I used to work nights, but it took such a toll on my sleeping that I switched back to the day shift.

A groom's outing with his male friends before his wedding; a bachelor party. Mark knew that his stag night had gotten out of control when the police arrived.

old-fashioned A bitterly cold night (i.e., so cold that one would need their dogs in bed with them to stay warm). Temperatures fell well below freezing, a true three-dog night.

A night of celebrations or revelry in various places (typically restaurants, bars, clubs, etc.) that a particular town or city has to offer. We were out for a night on the town last night to celebrate Valerie's birthday. That's why we're all so exhausted today. I had a night on the town with my closest friends from school last weekend.