Definition of: fideicommissum

(fī′de·ī·kə·mis′əm) noun plural ·sa
In Roman and civil law, a devise or bequest coupled with a request to the party named to give the property to a third party who could not hold directly under the will; a trust estate. [<L <fidei, dat. of fides faith + commissum, pp. neut. sing of committere entrust to]