2016 Olympics locale (3)
I believe the answer is:
rio
'2016 olympics locale' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rio that I've seen before include "... Grande, ... de Janeiro" , "Spanish word for river" , "A Mexican river - like Grande" , "Erstwhile home of Biggs" , "old capital" .)