Pugilist Muhammad (3)
I believe the answer is:
ali
'pugilist muhammad' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ali that I've seen before include "Late boxer" , "Muhammad ___ (or MacGraw?)" , "Muhammad's son-in-law" , "Person" , "Muhammad - - , legendary boxer" .)