Crossword Genius

Country producing oil we hear (6)

Ross

I believe the answer is:

greece

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'country' is the definition.
(Greece is an example)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for greece that I've seen before include "European nation" , "EU country" , "Mediterranean country" , "in E" , "Modern-day classical Hellas" .)

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