01 n. 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…
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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. Also: monocle
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2.
Eyepiece of a telescope, microscope, etc.
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3.
The retina.[Poetic]
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4.
A glass eyecup. See Eyecup. See: Eyecup