byssus
/ˈbɪsəs/
noun 3
Definitions
noun
1
The long fine silky filaments excreted by several mollusks (particularly Pinna nobilis) by which they attach themselves to the sea bed, and from which sea silk is manufactured.
2
Sea silk manufactured from these filaments.
3
The stipe or stem of some fungi which are particularly thin and thread-like.
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