ostrum
i, n.
I.
Lit., the blood of the sea-snail, purple (cf.: murex, purpura): ostro Perfusae vestes, Verg. A. 5, 111; Vitr. 7, 13.—
II.
Transf.
A.
Stuff dyed with purple, a purple dress, purple covering, purple: textilibus si in picturis ostroque rubenti Jacteris, Lucr. 2, 35: stratoque super discumbitur ostro, Verg. A. 1, 700: Sarrano dormire ostro, id. G. 2, 506: velare umeros ostro, id. A. 7, 814; 4, 134; Prop. 4 (5), 3, 51. cenae sine aulaeis et ostro, Hor. C. 3, 29, 15; id. Ep. 1, 10, 26.—
B.
The brilliancy of purple, purple, Auct. Aetnae, 332.