City for cavorting pairs (5)
I believe the answer is:
paris
'city' is the definition.
(I know that Paris is a city)
'cavorting pairs' is the wordplay.
'cavorting' indicates anagramming the letters.
'pairs' is an anagram of 'PARIS'.
'for' acts as a link.
(Other definitions for paris that I've seen before include "captivated Helen" , "where plaster comes from?" , "European capital - Greek hero" , "Helen's abductor" , "'''I love ... in the springtime'' (Cole Porter) (5)'" .)