Crossword Genius

Speaker's authority in chamber (7)

Ross

I believe the answer is:

auricle

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'chamber' is the definition.
(auricle is a kind of chamber)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for auricle that I've seen before include "Air clue for part of the ear" , "place in one's heart" , "External part of the year." , "External part of the ear" , "Upper chamber of the heart" .)

I've seen this clue in The Guardian.
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