Glass is defined as a hard substance made by heating and then quickly cooling sicilates with soda or potash or lime, or something made of this substance.(noun)
An example of a glass is a container used for drinking wine.
Glass means to put food into canning jars, to reflect or to replace broken windows.(verb)
An example of glass is to put tomatoes in canning jars.
The definition of glass is something made of or like the hard substance made of silicates, soda or potash, lime and sometimes metallic oxides.(adjective)
An example of glass used as an adjective is in the phrase "glass window," which means a window made from this substance.
See glass in Webster's New World College Dictionary
Origin: ME glas < OE glæs, akin to Ger glas < IE base *ĝhel-, to shine > gold, glint, glow
See glass in American Heritage Dictionary 4
Origin: Middle English glas
Origin: , from Old English glǽs; see ghel-2 in Indo-European roots.
Learn more about glass