Encircle, beleaguer (7)
I believe the answer is:
besiege
This clue is a double definition.
'encircle' is the first definition.
(I've seen this before)
'beleaguer' is the second definition.
(I know that beleaguer can be written as besiege)
(Other definitions for besiege that I've seen before include "Enclose, preventing ingress or egress" , "Invest" , "'Harass, beleaguer (7)'" , "Surround (a place) with hostile intent" , "Pester" .)