Eyeglass /(?)/

Eye·glass

Eyeglass

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.
  2. Eyepiece of a telescope, microscope, etc.
  3. The retina. [Poetic]
  4. A glass eyecup. See Eyecup.