Definitions
1.nounItems delivered or completed overnight."Have you looked at the overnights yet?"
2.nounAn overnight stay, especially in a hotel or other lodging facility.
3.noun(in the plural) Viewership ratings for a television show that are published the morning after it is broadcast, and may be revised later on.
4.nounThe fore part of the previous night; yesterday evening.
5.verbTo stay overnight; to spend the night.
6.verbTo send something for delivery the next day."We can overnight you the documents for signature."