su·per·car·go (sōō'pər-kär'gō) n.
pl.su·per·car·goes or su·per·car·gos An officer on a merchant ship who has charge of the cargo and its sale and purchase.
[Alteration (influenced by super-) of supracargo, alteration (influenced by supra-) of Spanish sobrecargo : sobre-, over (from Latin super-; see super-) + cargo, cargo; see cargo.]