Crossword Genius

Keeps The Suits in check within earshot of the leadership (6)

Ross

I believe the answer is:

closet

I'm a little stuck... Click here to teach me more about this clue!

'leadership' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

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

Can you help me to learn more?

(Other definitions for closet that I've seen before include "Wardrobe in the US" , "Small room or cabinet for storage" , "Study" , "Secret - cupboard" , "Shut away in private conference - in small room?" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).
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