fidei commissum

noun | \ ˈfī-dē-ˌā-kə-ˈmi-səm, ˈfē-dā-ˌē-kȯ-ˈmē-su̇m \ | fi·dei com·mis·sum

1. : a gift (as by will) of property in which a person is invested with title and which the person is directed to convey to another person or to make a particular disposition of — compare substitution

   Note: Fidei commissa are prohibited by the Louisiana Civil Code.