glass

noun

• 1a hard, brittle substance, typically transparent or translucent, made by fusing sand with soda, lime, and sometimes other ingredients and cooling rapidly. It is used to make windows, drinking containers, and other articles:a piece of glass [as modifier]:a glass door
• a substance similar to glass that has solidified from a molten state without crystallizing.

• 2a thing made from, or partly from, glass, in particular.
• a container to drink from:a beer glass
• glassware.
• greenhouses or cold frames considered collectively.
• chiefly British a mirror.
• archaic an hourglass.

• 3a lens, or an optical instrument containing a lens or lenses, in particular a monocle or a magnifying lens.

• 4the liquid or amount of liquid contained in a glass; a glassful:a glass of lemonade I’ll have another glass, please

verb

• 1cover or enclose with glass:the inn has a long balcony, now glassed in

• 2(especially in hunting) scan (one’s surroundings) with binoculars:the first day was spent glassing the rolling hills

• 3 literary reflect in or as if in a mirror:the opposite slopes glassed themselves in the deep dark water