verb
/ˈspɛnd/ spends; spent /ˈspɛnt/; spending
to use (money) to pay for something [+ obj]
[+ obj] :to allow (time) to pass in a particular place or while doing a particular activity
[+ obj] :to use (energy or effort) to do something
spend the night
If you sleep at a place for a night, you spend the night there.