Crossword Genius

Couple in conference, perhaps overheard (4)

Ross

I believe the answer is:

pair

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'couple' is the definition.
('pair' can be a synonym of 'couple')

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

Can you help me to learn more?

(Other definitions for pair that I've seen before include "2" , "E.g. two aces; mate" , "Husband and wife" , "Twosome" , "flight of stairs" .)

I've seen this clue in The Telegraph.
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