chichi (2)youdaoicibaDictYouDict
"A woman’s breast", Late 20th century: military slang, of Japanese origin.
chichi (1)youdaoicibaDictYouDict
"Attempting stylish elegance but achieving only an over-elaborate pretentiousness", Early 20th century (in the sense 'showiness or pretentious object'): from French, of imitative origin.