glass

noun
gläs

An amorphous solid, often transparent substance, usually made by melting silica sand with various additives (for most purposes, a mixture of soda, potash and lime is added).

Example

“This tabletop is made of glass.”

Other meanings

Any amorphous solid (one without a regular crystal lattice).
“Metal glasses, unlike those based on silica, are electrically conductive, which can be either an advantage or a disadvantage, depending on the application.”
A vessel from which one drinks, especially one made of glass, plastic, or similar translucent or semi-translucent material.
“Would you like a glass of wine?”

A kind of

solid

Kinds of glass

natural glass
opal glass
optical glass
soft glass
ground glass
lead glass
safety glass
soluble glass

Example sentences

“Have you had a glass of water recently?”
Tatoeba · shekitten · CC0
“Is your glass half full or half empty?”
Tatoeba · Igider · CC0
“Glass is an important material.”
Tatoeba · deniko · CC0

Word history

From Old English "glæs".

Where this comes from

This definition is adapted from “glass” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.