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A small stone, especially one worn smooth by erosion.
(noun)
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Clear colorless quartz; rock crystal.
(noun)
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A lens made of such quartz.
(noun)
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Geology A rock fragment between 4 and 64 millimeters (0.16 and 2.51 inches) in diameter, especially one that has been naturally rounded.
(noun)
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An irregularly rough, grainy surface, as on leather or paper.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.