A heavy optical glass, consisting essentially of potassium borosilicate.

The fused material for making glass.

A silicate of sodium or potassium, found commercially as a white, glassy mass, a stony powder, or dissolved as a viscous, syrupy liquid; used for making fabrics fireproof, for hardening artificial stone, etc.

A vitreous oxide of antimony mixed with sulfide.

(now historical) A coach with glass in the windows, especially one hired as a private carriage.

Fine threads of glass, wound, when in fusion, on rapidly rotating heated cylinders.

A small glazed frame for the protection of plants. / A small mirror with a handle.

A style of sunglasses which have frames containing horizontal slats as opposed to tinted lenses.

A glass tube for a water gauge.

An instrument consisting of a glass tube with terminal bulbs, and containing ether or alcohol, which the heat of the hand causes to boil.