City girl somehow gave in (3,5)
I believe the answer is:
las vegas
'city' is the definition.
(Las Vegas is an example)
'girl somehow gave in' is the wordplay.
'girl' becomes 'lass' (lass is a kind of girl**).
'somehow' indicates an anagram.
'in' means one lot of letters goes inside another.
'gave' is an anagram of 'vega'.
'lass' enclosing 'vega' is 'LAS VEGAS'.
(Other definitions for las vegas that I've seen before include "Gambling city in Nevada, USA" , "Nevada's largest city" , "Famous gambling city in Nevada" , "American premier gambling city" , "'City famous for gambling and excess (3,5)'" .)