chi-chi
Ostentatiously fancy I don't like chi-chi décor like that—I would want my house to be comfortable and inviting.
Chi-town
A nickname for the city of Chicago, Illinois. Oh, when you're in Chi-town this weekend, you have to check out the Bean and go to a Cubs game.
chi-chi
 (ˈʃiʃi) mod. elegant.  Her living room is so chi-chi that you are afraid to go in. 
Chi(town)
 (ˈʃɑɪtɑʊn and ˈtʃɑɪtɑʊn) n. Chicago, Illinois.  I can’t wait to get back to old Chitown. 
Chi
 verb