Real Dictionary

glass
uncountable noun: Glass is a hard transparent substance that is used to make things such as windows and bottles.

Glass in American English
a hard, brittle substance made by fusing silicates with soda or potash, lime, and, sometimes, various metallic oxides into a molten mass that is cooled rapidly to prevent crystallization or annealed to eliminate stresses: various types of glass can be tra
of, made of or with, or like glass
Philip1937- ; U.S. composer
to become glassy
to put into glass jars for preserving
adjective: made of glass
noun: a hard, brittle, noncrystalline, more or less transparent substance produced by fusion, usually consisting of mutually dissolved silica and silicates that also contain soda and lime, as in the ordinary variety used for windows and bottles
transitive verb: to fit with panes of glass

glass in British English
noun: a hard brittle transparent or translucent noncrystalline solid, consisting of metal silicates or similar compounds. It is made from a fused mixture of oxides, such as lime, silicon dioxide, etc, and is used for making windows, mirrors, bottles, etc
noun: Philip. born 1937, US composer noted for his minimalist style: his works include Music in Fifths (1970), Akhnaten (1984), The Voyage (1992), and Monsters of Grace (1998); his film music includes scores for Kundun (1998), The Truman Show (1999), and The Ho

glass in Hospitality 1
noun: A glass is a container made from glass, which you can drink from and which does not have a handle.

glass in Hospitality 2
noun: The contents of a glass can be referred to as a glass of something.

glass in Mechanical Engineering
noun: Glass is a type of ceramic with a less ordered molecular structure, usually caused by rapidly cooling it from a molten state.