glass that comes in thinnish, flattish sheets (as opposed to, for example, a thick block or a globular shape), used to make doors, windows, eyewear, lenses, etc.; compare thuỷ tinh (“glass as a substance in general”)

eyeglasses / Synonym of gương (“mirror”)

(rare, chiefly in set phrases) to respect

(honorific, before verbs) respectfully; cordially

(only in compounds) path, trait; diameter

a magnifying glass

sunglasses

(geometry) radius

a lens (object focusing or defocusing the light passing through it)

eyeglasses, spectacles