eyestone: Meaning and Definition of

eye•stone

Pronunciation: (ī'stōn"), [key]
— n.
  1. a small calcareous body, flat on one side and convex on the other, passed between the eye and the eyelid to bring out cinders or other foreign matter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.