Remain in place (4)
I believe the answer is:
stay
'remain in place' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stay that I've seen before include "Rope or wire used to support a mast" , "Period in one place" , "Visit (for the night)" , "Supporting rope; remain" , "Remain - support" .)