noun

glass

glass, drinking glass, glasses

The window is made of glass.

The window is made of glass.

Could I have a glass of water?

Could I have a glass of water?

She wears glasses to read.

She wears glasses to read.

(uncountable) the material The ball broke the glass in the window.

a glass ((of sth.)) a container for drinking She poured me a glass of juice.

a pair of glasses spectacles for vision I can't find my glasses anywhere.

Synonyms: pane, crystal (material); tumbler, cup (container)

From Old English 'glæs', of Germanic origin.

'Glass' is the material, 'a glass' is a cup made from it, and 'glasses' help you see through glass lenses.

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