City has information on woman (6)
I believe the answer is:
geneva
'city' is the definition.
(I know that Geneva is a city)
'information on woman' is the wordplay.
'information' becomes 'gen' (gen can informally mean information).
'on' says to put letters next to each other (in a down clue, letters appear on others).
'woman' becomes 'Eva' (woman's name).
'gen'+'eva'='GENEVA'
'has' is the link.
(Other definitions for geneva that I've seen before include "(famous for its Red Cross)" , "International agreement on the treatment of civilians and captured or wounded military personnel in wartime" , "Swiss city and canton" , "old Calvinist stronghold" , "Average in Swiss city" .)