Capital of Costa Rica (3,4)
I believe the answer is:
san jose
'capital of costa rica' is the definition.
(synonyms)
This is all the clue.
(Other definitions for san jose that I've seen before include "California city - Costa Rica's capital" , "Do you know the Way to - -? (Dionne Warwick)" , "Residence for Californians" , "Costa-Rican capital" , "Capital city of Costa Rica" .)