octōni, ae, a, num. distr. adj. [octo].
I Eight each , eight at a time , by eights : cum alii octonos lapides ecfodiunt, Plaut. Capt. 3, 5, 66: partes, Varr. L. L. 9, § 30 Müll.: hujus generis octoni ordines ducti, Caes. B. G. 7, 73, 8: imperat Bellovacis decem, octona Pictonibus, id. ib. 7, 75, 3: octona milia peditum praetoribus data, Liv. 32, 28.—
II In gen., eight : octonis iterum natalibus actis, Ov. M. 13, 753: anni, id. ib. 5, 50.— Sing. : octonus (late Lat.) numerus, the number eight , Hil. prol. in Psa. 14.