A spent cartridge.
Spent shell casings.
Spent nuclear fuel.
I spent enough time out here a few years ago.
He wore a mask and spent a lot of time in the apartment.
Damian went to the gym, where Darian spent most of his time.
I spent forty minutes alone with the director and related all the situations where your uncanny tips were involved.
In all the time I spent in the woods as a young girl, that's the first time I've seen a bear.