Feature a type of porcelain (5)
I believe the answer is:
china
'type of porcelain' is the definition.
'feature a' is the wordplay.
'feature' becomes 'chin' (facial feature).
'chin'+'a'='CHINA'
(Other definitions for china that I've seen before include "Ceramic; mate" , "What's tea" , "Tableware; country" , "Ceramics; friend" , "Modern name for old Cathay" .)