Reach at the windpipe (7)

I believe the answer is:

trachea

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'the windpipe' is the definition.
('trachea' can be a synonym of 'windpipe')

'reach at' is the wordplay.
'reach at' anagrams to 'TRACHEA'.
Though, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for trachea that I've seen before include "air passage" , "Tube carrying air to the lungs" , "It connects the larynx and bronchi" , "get air supply through this" , "Tube taking inhaled air from the larynx" .)

I've seen this clue in The Irish News.

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