Induce the French to go round ancient city (4)
I believe the answer is:
lure
'induce' is the definition.
(thesaurus)
'the french to go round ancient city' is the wordplay.
'the french' becomes 'le'.
'to go round' indicates putting letters inside.
'ancient city' becomes 'ur'.
'le' placed around 'ur' is 'LURE'.
(Other definitions for lure that I've seen before include "Attract with bait" , "Attraction" , "'Entice, tempt (4)'" , "Entice, bait" , "'Decoy, bait (4)'" .)