noun
: glass in fibrous form used in making various products (as glass wool, yarns, textiles)
fiber glass insulation
a fiber glass boat
— called also fibrous glass, spun glass
noun
: glass in fibrous form used in making various products (as glass wool, yarns, textiles)
fiber glass insulation
a fiber glass boat
— called also fibrous glass, spun glass
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012