Make fun of crude effigy (3)
I believe the answer is:
guy
This clue is a double definition.
'make fun of' is the first definition.
(synonyms)
'crude effigy' is the second definition.
(Guy Fawkes effigy)
(Other definitions for guy that I've seen before include "Mr Fawkes" , "One burned on Nov. fifth" , "Rope; man" , "Cable, wire etc used to brace something" , "Ridicule like Fawkes" .)