Great plains of Argentina (6)

I believe the answer is:

pampas

'great plains of argentina' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for pampas that I've seen before include "Vast plains of South America" , "Great plains of S America (6)" , "Argentinian plains" , "South American grassland" , "Great plains of Argentina" .)

I've seen this clue in The Times.

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