Overnight
Definition 1 of 3
Pro Tip 1/3
Duration emphasized
Emphasizes that something continues for the whole night without interruption. The baby cried overnight, so nobody got much sleep.
Pro Tip 2/3
Travel context
Often used to describe travel plans that involve leaving in the evening and arriving the next morning. We're catching the overnight train to Scotland.
Pro Tip 3/3
Temporary stay
Suggests a short, often one-night stay, typically for convenience. I'm staying overnight at a friend's place after the concert.