Rebuffed, continues to be coquettish, ignoring feminine facial feature (7)
I believe the answer is:
nostril
'feature' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for nostril that I've seen before include "Opening of the nose" , "Nasal cavity" , "A hole in the head" , "Nasal opening" , "Breathing channel" .)