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The Collaborative International Dictionary of English v.0.48 (gcide)

eyecup \eye"cup`\, n.
A small oval porcelain or glass cup, having a rim curved to
fit the orbit of the eye. it is used in the application of
liquid remedies to eyes; -- called also {eyeglass}.
[1913 Webster]


Eyeglass \Eye"glass`\, n.
1. A lens of glass worn in front of the eye to assist vision;
-- usually used in the plural, referring to a pair of
lenses fixed together in a frame, and worn resting on the
bridge of the nose, to improve the vision. A single
eyeglass in a frame is called a {monocle}.
[1913 Webster PJC]

2. Eyepiece of a telescope, microscope, etc.
[1913 Webster]

3. The retina. [Poetic]
[1913 Webster]

4. A glass eyecup. See {Eyecup}.
[1913 Webster]