byssus
/ˈbɪsəs/
noun
- A bundle of strong, silky fibers that some shellfish, like mussels, use to attach themselves to rocks or other surfaces.
- The mussel used its byssus to cling tightly to the pier.
- Scientists study the byssus of marine animals to develop strong, waterproof adhesives.
- The byssus of certain clams was once used to make a fine fabric called sea silk.