Slash (8)
I believe the answer is:
lacerate
'slash' is the definition.
(to lacerate is to slash or tear)
This is all the clue.
(Other definitions for lacerate that I've seen before include "Tear, wound, hurt" , "Clare ate (anag)" , "Deeply cut (flesh, skin)" , "Tear or make deep cuts" , "Tear or cut (flesh) deeply" .)