Res mancipi
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In Roman law. Certain classes of things which could not be aliened or transferred except by means of a certain formal ceremony of conveyance called "mancipatio," (q. vt) These included land, houses, slaves, horses, and cattle. All other things were calied "res nec mancipi-" The distinction was abolished by Justinian. —