fideicommissum

noun, plural fi·de·i·com·mis·sa [fahy-dee-ahy-kuh–mis–uh] /ˌfaɪ di aɪ kəˈmɪs ə/. Civil Law.

1. a request by a decedent that the heir or legatee to the estate convey a specified part of the estate to another person, or permit another person to enjoy such a part.

noun plural -sa (-sə)

1. civil law a gift of property, usually by will, to be held on behalf of another who cannot receive the gift directly