Enthusiast from Brazil? (3)
I believe the answer is:
nut
This clue is a double definition.
'enthusiast' is the first definition.
(nut can mean an enthusiast or fan)
'brazil?' is the second definition.
(brazil is a kind of nut)
'from' acts as a link.
(Other definitions for nut that I've seen before include "One securing bolt" , "organized teachers" , "eg Hazel" , "buff" , "Enthusiast (slang)" .)