The fore part of the night last past; the previous evening.
- Lasting for, extending over, or remaining during a night: an overnight trip; an overnight guest.
- For use over a single night or for a short journey: overnight supplies.
- Mailed for guaranteed delivery on the next day: an overnight package.
- Happening as if in a single night; sudden: an overnight success.
- During or for the length of the night: Let the meat marinate overnight.
- In or as if in the course of one night; suddenly: became a sensation overnight.
- An overnight stay or trip.
- To spend the night: overnighting at a country inn.
- To send by mail or other courier for delivery the next day.