† byssĭnus, a, um, adj., = βύσσινος, made of byssus: linum, Plin. 19, 1, 4, § 21: vestis, App. M. 11, p. 269, 10; Isid. Orig. 19, 22, 15: opus, Dig. 39, 5, 16, § 7.
Subst.: byssĭnum, i, n. (sc. opus), a garment of byssus; trop.: vestite vos serico probitatis, byssino sanctitatis, purpură pudicitiae, Tert. Cult. Fem. 13; Vulg. 2 Par. 5, 12 al.