byssus

i, f.
I. cotton, cotton stuff, App. M. 11, p. 258, 20; Mart. Cap. 2, § 114; Vulg. Exod. 25, 4 al. (acc. to others, a fine kind of flax, and the linen made from it; v. Liddell and Scott's Lex.).
Lewis & Short
A Latin Dictionary, 1879
An open-access project