ostrum, i, n., = ὄστρεον.
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, on purple-covered couches , 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.