{ Cestuy or Cestui (?), } pron. [Norm. F.] (Law) He; the one.[1913 Webster]
Cestuy que trust (&unr_;) [norm. F.], a person who has the equitable and beneficial interest in property, the legal interest in which is vested in a trustee. Wharton. -- Cestuy que use (&unr_;) [Norm. F.], a person for whose use land, etc., is granted to another.[1913 Webster]