Body stays (7)
I believe the answer is:
remains
This clue is a double definition.
'body' is the first definition.
(I know that body can be written as remains)
'stays' is the second definition.
(I know this)
(Other definitions for remains that I've seen before include "The body: endures" , "Residue" , "Historical relics" , "Body after death" , "Continues" .)