Lewis & Short

octŏ, num. adj. [Gr. ὀκτώ; Sanscr. ashtan; Goth. ahtau; Germ. acht; Engl. eight], eight: milia militum octo, Enn. ap. Prisc. p. 556 P. (Ann. v. 336 Vahl.): milia passuum octo, Caes. B. G. 1, 21: centum et octo anni, Cic. Rep. 2, 10, 18: centuriae, id. ib. 2, 22, 39: decem et octo, Liv. 10, 21, 6: mariti, Juv. 6, 229.