Noun
(countable) A business that works with glass or glassware; glassworks.
(countable, uncountable) A building or group of buildings made largely of glass windows.
(countable) A room with many windows; sunroom.
(countable) A place for storing or displaying glassware.
(uncountable) Glassware.
(uncountable) Skill in working with glass.
Source: en.wiktionary.org