Wrestle (7)
I believe the answer is:
grapple
'wrestle' is the definition.
(I know that wrestle can be written as grapple)
This is the entire clue.
(Other definitions for grapple that I've seen before include "Engage closely with" , "struggle" , "Clutch" , "Lay hold of" , "Attempt to get hold of, or seize" .)