Leave (the premises) (6)
I believe the answer is:
vacate
'leave the premises' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vacate that I've seen before include "Caveat - cease to occupy" , "Move out and leave empty" , "Leave behind empty" , "Depart from, leave empty" , "Withdraw as from premises" .)