1. a single lens worn in front of one eye to help with vision
Usage: often called a monocle
2. eyeglasses; a pair of lenses in frames worn to correct vision
Usage: usually used in plural form

Examples

• The gentleman adjusted his eyeglass to read the fine print.
• She polished her eyeglass carefully before putting it on.
• My grandfather wore an eyeglass on a chain around his neck.
• The optometrist recommended a new eyeglass prescription.
• He squinted through his eyeglass at the distant sign.
• The antique eyeglass was made of gold and crystal.
• She needed her eyeglass to see the theater performance clearly.