octāvus or VIII num ord. octo, the eighth: post diem octavum, S.: octava pars: legio, Cs.: a. d. VIII Kal. Dec., the 24th of November: horā VIII convenire: octavo decimo aetatis anno, Ta.

—As subst f. (sc. hora), the eighth hour of the day, Iu.

—As subst n.: ager efficit cum octavo (sc. grano), produces eightfold.