"Overnight" means something that happens or occurs during the night or from one day to the next, typically within a short period of time. Full definition
You can save a few hundred dollars by doing the drive in 20 hours or so if you have two drivers and don't stop for overnight stays in a hotel. (moneysense.ca)
Each of these quick and healthy recipes for overnight oats in a jar takes just a matter of minutes to make and can be made ahead of time. (smilesandwich.com)
If you need it faster, there are also options available for overnight deliveries with an extra fee. (comedydriving.com)