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ŏnĕrārĭus, a, um, adj. [onus], of or belonging to burden, transport, or carriage; that bears a burden, carries freight (class.): jumenta, beasts of burden, Liv. 41, 4: navis, a ship of burden, Sisenn. ap. Non. 536, 5 (opp. actuaria); Caes. B. G. 4, 22; 25 al.; Liv. 22, 11, 6.
Also subst.: ŏnĕrārĭa, ae, f., a ship of burden, a merchant-vessel, a transport, Cic. Att. 10, 12, 2.