safety glass

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Glass that resists shattering, especially a composite of two sheets of glass with an intermediate layer of transparent plastic.
• noun Tempered glass that breaks into rounded grains instead of jagged shards.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a laminate of two or more sheets of glass with a sheet of plastic between each sheet
• noun glass that has been tempered to break into rounded grains rather than sharp shards
• noun glass reinforced with wire netting
• noun glazing units constructed of a combination of the above

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering