GLASS n.
A hard, brittle, translucent, and commonly transparent substance, white or colored, having a conchoidal fracture, and made by fusing together sand or silica with lime, potash, soda, or lead oxide. It is used for window panes and mirrors, for articles of table and culinary use, for lenses, and various articles of orname…
GROUND n.
s seat, as distinguished from a compression cock. Knight. -- Ground glass, glass the transparency of which has been destroyed by having its surface roughened by grinding. -- Ground joint, a close joint made by grinding together two pieces, as of metal with emery and oil, or of glass with fine sand and water.…