Pain in most of mouth and windpipe (7)

I believe the answer is:

trachea

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But I can't explain it at all! Could you help me understand?

(Other definitions for trachea that I've seen before include "The formal windpipe" , "It connects the larynx and bronchi" , "airway" , "pipe" , "membranous tube" .)

I've seen this clue in The Times.

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