Old bean - this is a person from Middle East women's organisation (7)

I believe the answer is:

arabica

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If this is the answer I cannot explain how the clue works.

(Other definitions for arabica that I've seen before include "Variety of coffee bean" , "hot beverage" , "Type of coffee bean" , "African tree cultivated for coffee" , "sort of bean" .)

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

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