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Meaning of millstone

mill•stone

Pronunciation: (mil'stōn"), [key]
— n.
  1. either of a pair of circular stones between which grain or another substance is ground, as in a mill.
  2. anything that grinds or crushes.
  3. any heavy mental or emotional burden (often used in the phrase a millstone around one's neck).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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