Law The person in a trust relationship who holds title to property for the benefit of another, A person to whom property is legally committed in trust, to be applied either for the benefit of specified individuals, or for public uses; one who is intrusted with property for the benefit of another; also, a person in whose hands the effects of another are attached in a trustee process, members of a governing board, verb_ To attach (a debtor's wages, credits, or property in the hands of a third person) in the interest of the creditor, To commit (property) to the care of a trustee; as, to trustee an estate, intransitive verb_ To place (property) in the care of a trustee, To function or serve as a trustee.