Latvia's capital (4)
I believe the answer is:
riga
'latvia's capital' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for riga that I've seen before include "A rig in Latvia" , "Baltic port" , "Fix a rig up here for the Latvians" , "Latvian port" , "capital in Europe" .)