The American Heritage® Dictionary of the English Language, 4th Edition
n. A material consisting of extremely fine glass fibers, used in making various products, such as yarns, fabrics, insulators, and structural objects or parts. Also called spun glass.
the GNU version of the Collaborative International Dictionary of English
n. a material made of fine glass fibers woven into a fabric-like form, and used in applications requiring heat resistance; it is also embedded in resins to make a pliable but strong composite material used as the main component of fishing rods and boat hulls, and replacing the sheet metal in some automobile bodies.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a covering material made of glass fibers in resins
Word Usage
"Perhaps fiberglass is not as brittle as reinforced carbon-carbon (preventing a fracturing of the hull of Orion, a la the holing of the RCC on Columbia)."