n.
Pronunciation: ' glas, ' gläs
Function: noun
Usage: often attrib
Etymology: Middle English glas, from Old English glæs; akin to Old English geolu yellow ― more at YELLOW
Date: before 12th century
1 : any of various amorphous materials formed from a melt by cooling to rigidity without crystallization: as a : a usually transparent or translucent material consisting typically of a mixture of silicates b : a material (as obsidian) produced by fast cooling of magma
2 a : something made of glass: as (1) : TUMBLER also : GLASSWARE (2) : MIRROR (3) : BAROMETER (4) : HOURGLASS (5) : BACKBOARD 1 b (1) : an optical instrument or device that has one or more lenses and is designed to aid in the viewing of objects not readily seen (2) : FIELD GLASSES , BINOCULARS ― usually used in plural c plural : a device used to correct defects of vision or to protect the eyes that consists typically of a pair of glass or plastic lenses and the frame by which they are held in place ― called also eyeglasses spectacles
3 : the quantity held by a glass container
4 : FIBERGLASS
– glass · ful \ ' glas- ˌ fu ̇ l \ noun
– glass · less \ -l ə s \ adjective