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Powdered rock used as an abrasive
Answer for the clue "Powdered rock used as an abrasive ", 11 letters:
rottenstone
Word definitions for rottenstone in dictionaries
WordNet
Word definitions in WordNet
n. a weathered and decomposed siliceous limestone; in powdered form it is used in polishing [syn: tripoli ]
Wiktionary
Word definitions in Wiktionary
n. (context geology English) A soft, friable limestone, used in polishes
Usage examples of rottenstone.
He did not brood over a storm, therefore, but continued to consider the subject which had so deeply interested him since he discovered Mulgrum on his knees at the door, with a rag and a saucer of rottenstone in his hands.