Brute in Budapest (3)
I believe the answer is:
ape
'brute' is the definition.
(ape is a kind of brute)
'in budapest' is the wordplay.
'in' indicates a hidden word.
'APE' is hidden in the letters of 'budapest'.
(Other definitions for ape that I've seen before include "Parrot" , "Wild animal" , "Primate resembling a human" , "Simulate" , "gorilla" .)