WordReference Random House Learner's Dictionary of American English © 2014
o•ver•night /adv. ˈoʊvɚˈnaɪt; adj., n. ˈoʊvɚˌnaɪt/USA pronunciation
for or during the night:We'll stay overnight and leave early tomorrow morning.
very quickly; suddenly:New suburbs sprang up overnight.
on the previous evening:Preparations were made overnight.
adj. [before a noun]
done, made, occurring, or continuing during the night:an overnight flight.
staying for one night:overnight guests.
being or intended for delivery on the next day:overnight mail.
occurring suddenly or within a very short time:an overnight success.
History, Informal Termsan overnight stay or trip.
Collins Concise English Dictionary © HarperCollins Publishers::
overnight adv /ˌəʊvəˈnaɪt/
adj /ˈəʊvəˌnaɪt/(usually prenominal)
- for the duration of the night
- in or as if in the course of one night; suddenly: the situation changed overnight
- done in, occurring in, or lasting the night: an overnight stop
- staying for one night
- for use during a single night
- occurring in or as if in the course of one night; sudden: an overnight victory
'overnight' also found in these entries: