1. The chief constituent of silk, cobwebs, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• fibroin,
• fibroine,
• Fybroin,
• Fibroyn,
• fibroen,
• dibroine,
• cibroine,
• vibroine,
• gibroine,
• tibroine,
• ribroine,
• fubroine,
• fjbroine,
• fkbroine,
• fobroine,
• f9broine,
• fibroihe,
• fibroinee,
• Fibroyne,
• Fybroyne