Brazilian city (3)
'brazilian city' is the definition.
(Rio de Janeiro)
This is all the clue.
(Other definitions for rio that I've seen before include "The ... Grande borders Texas and Mexico" , "A Mexican river, may be grande" , "(Golfer) in the sand" , "Brazilian city and port" , "Port, -- de Janeiro" .)
'brazilian city' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rio de janeiro that I've seen before include "2016 Olympics host city" , "place" , "Brazilian port noted for its carnival" , "long-haul holiday destination" , "Brazil port, once capital" .)