part of speech: noun

definition 1: a hard, clear material that breaks easily. Glass is used to make windows, bottles, mirrors, and the like.

definition 2: a container used for drinking, usually made of glass.

definition 3: (plural) a pair of lenses set in frames that help a person to see better; eyeglasses.

synonyms: eyeglasses, spectacles

derivation: glasslike (adj.)