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Webster 1913 Edition

Eyestone

Eye′stoneˊ

(ī′stōnˊ)
,
Noun.
1.
A small, lenticular, calcareous body, esp. an operculum of a small marine shell of the family
Turbinidæ
, used to remove a foreign substance from the eye. It is put into the inner corner of the eye under the lid, and allowed to work its way out at the outer corner, bringing with it the substance.
2.
(Min.)
Eye agate. See under
Eye
.

Webster 1828 Edition

Eyestone

EYESTONE

,
Noun.
A small calcarious stone used for taking substance from between the lid and ball of the eye.

Definition 2024

eyestone

eyestone

English

Noun

eyestone ‎(plural eyestones)

  1. A small, lenticular, calcareous body, especially an operculum of a small shell of the family Tubinidae, used to remove a foreign substance from the eye.
  2. (mineralogy) Eye agate.

Etymology

eye +‎ stone

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