eyeglass

[ ahy-glas, ahy-glahs ]
/ ˈaɪˌglæs, ˈaɪˌglɑs /

noun

eyeglasses, glass(def 5).
a single lens used to aid vision, especially one worn or carried on the person; monocle.
an eyepiece.
an eyecup.

Origin of eyeglass

First recorded in 1605–15; eye + glass
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for eyeglass

eyeglass
/ (ˈaɪˌɡlɑːs) /

noun

a lens for aiding or correcting defective vision, esp a monocle
another word for eyepiece
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for eyeglass

eyeglass
[ īglăs′ ]

n.

eyeglasses Glasses for the eyes.
A single lens in a pair of glasses; a monocle.
eyepiece
eyecup
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.