Using head, attack bum (4)
I believe the answer is:
butt
This clue is a triple definition!
'using head' is the first definition.
'butt' can be an answer for 'head' (thesaurus). I am unsure of the 'using' bit.
'attack' is the second definition.
(I've seen this before)
'bum' is the third definition.
(I know that bum can be written as butt)
Can you help me to learn more?
(Other definitions for butt that I've seen before include "Blunt end - target of ridicule - hit with the head - cask - US backside" , "Bottom end of a rifle" , "at 16 down [MAN UNITED]" , "Victim of ridicule" , "Hit with the head; object of ridicule" .)