Pain in mouth after cut in windpipe (7)
I believe the answer is:
trachea
'cut in windpipe' is the definition.
'trachea' can be an answer for 'windpipe' (synonyms). I am unsure of the 'cut in' bit.
'pain in mouth' is the wordplay.
'pain' becomes 'ache' (ache is a kind of pain).
'in' is an insertion indicator.
'mouth' becomes 'tra' (I can't justify this - if you can you should give a lot more credence to this answer).
'ache' placed into 'tra' is 'TRACHEA'.
'after' acts as a link.
Can you help me to learn more?
(Other definitions for trachea that I've seen before include "get air supply through this" , "airway" , "body part" , "It connects the larynx and bronchi" , "membranous tube" .)