Wrap up, swathe (7)
I believe the answer is:
envelop
I believe this clue is a double definition.
'wrap up' is the first definition.
(I've seen this before)
'swathe' is the second definition.
(I've seen this before)
(Other definitions for envelop that I've seen before include "Ring" , "Give all-round cover" , "Cover completely" , "Wrap around completely" , "Surround completely" .)