Portuguese-speaking nut (6)

I believe the answer is:

brazil

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

'nut' is the definition.
(I know that brazil is a type of edible nut)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for brazil that I've seen before include "Largest Latin American country" , "Largest Latin-American country" , "Rio's country" , "Largest South American country" , "Amazon's country" .)

I've seen this clue in The Daily Express.

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