Slice (off) (3)
I believe the answer is:
lop
'slice off' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lop that I've seen before include "Cut (e.g. branch off)" , "Prune, cut the top off" , "Cut away branches or twigs" , "Chop (off)" , "Hack" .)