Definify.com
Webster 1913 Edition
overnight
o′ver-night′
,adv.
1.
In the fore part of the night last past; in the evening before.
2.
Throughout the night;
as, the candle will not last
. overnight
I had been telling her all that happened
overnight
. Dickens.
Webster 1828 Edition
Overnight
OVERNIGHT
,Noun.