Olga's new place (5)
I believe the answer is:
lagos
'place' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'olga's new' is the wordplay.
'new' indicates anagramming the letters.
'olgas' is an anagram of 'LAGOS'.
Can you help me to learn more?
(Other definitions for lagos that I've seen before include "Former Nigerian capital" , "African port" , "city in Africa" , "African city" , "Nigerian city and port" .)