crown glass
Share:
Tweet n. 1. A soda-lime optical glass that is exceptionally hard and clear, with low refraction and low dispersion. 2. A form of window glass made by whirling a glass bubble to make a flat circular disk with a lump left in the center by the glass blower's rod. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.