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A large mass of stone detached from the surrounding land. / (geology) A particle greater than 256 mm in diameter, following the Wentworth scale / A large marble, in children's games.

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boulder

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boulder

/ˈbəʊl.də(ɹ)/

noun

A large mass of stone detached from the surrounding land. / (geology) A particle greater than 256 mm in diameter, following the Wentworth scale / A large marble, in children's games.