1. a strong, lightweight material made of glass fibers embedded in plastic resin

1. made of or containing fiberglass

Examples

• The boat hull was constructed from durable fiberglass.
• Fiberglass insulation helps keep homes energy efficient.
• The car’s fiberglass body panels were lightweight but strong.
• Workers wore protective gear when handling fiberglass materials.
• The fiberglass ladder won’t conduct electricity.
• She repaired the fiberglass canoe with resin and cloth.
• The swimming pool had a smooth fiberglass finish.