FIBREGLASSES Scrabble 18 Words With Friends 21 Definition FIBREGLASSES is the plural of FIBREGLASS. noun FIBREGLASS: a covering material made of glass fibers in resins. Anagrams of FIBREGLASSES fiberglasses See all 758 words you can make from FIBREGLASSES → 12-letter words Words starting with F Words ending with S ← Unscramble different letters