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"prairie" is also used as a crossword clue. If that's what you saw, the answer is often grassland (9 letters).
Definitions
Treeless grassy plain.
Word origin
Borrowed from French prairie, from Old French praerie, from Vulgar Latin *prataria, from Latin prātum (“meadow”) + -aria.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Grassy plain”7 letters
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