I.the eighth: “octava pars,” Cic. Att. 15, 26, 4: “legio,” Caes. B. G. 2, 23: “marmor,” the eighth mile-stone, Mart. 9, 65, 4.—
II. Subst.: octāva , ae, f.
A. (Sc. hora.) The eighth hour of the day, Mart. 4, 8, 5; Juv. 1, 49.—
B. (Sc. pars.) The eighth part, as a tax, Cod. Just. 4, 65, 7; Cod. Th. 4, 12, 6; Ulp. Fragm. 6, 12 (cf. octavarius).—
III. Adv.: octāvum , for the eighth time, Liv. 6, 36, 7.