Crossword Genius

They're highly regarded in South America (5)

Ross

I believe the answer is:

andes

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

'in south america' is the definition.
('Andes' is part of 'south america')

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

Can you help me to learn more?

(Other definitions for andes that I've seen before include "South American mountain range" , "Great S American mountains" , "South American mountain chain" , "A geographical feature" , "The range of llamas?" .)

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