Turnover in coats (5)
I believe the answer is:
lapel
'turnover in coats' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
This is all the clue.
Can you help me to learn more?
(Other definitions for lapel that I've seen before include "Turned-back part of coat collar" , "Folded-back part of coat" , "Part of a folded back collar" , "Part of a suit jacket" , "Lower extension of collar on jacket or coat" .)