The Collaborative International Dictionary of English v.0.48:

Trustee \Trus*tee"\, v. t.
   1. To commit (property) to the care of a trustee; as, to
      trustee an estate.
      [1913 Webster]

   2. (Law) To attach (a debtor's wages, credits, or property in
      the hands of a third person) in the interest of the
      creditor. [U. S.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Trustee \Trus*tee"\, n. (Law)
   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.
   [1913 Webster]

   Trustee process (Law), a process by which a creditor may
      attach his debtor's goods, effects, and credits, in the
      hands of a third person; -- called, in some States, the
      process of foreign attachment, garnishment, or
      factorizing process. [U. S.]
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "trustee":
   accepter, accountant, acquirer, addressee, audience, auditor,
   beholder, bookkeeper, bursar, cashier, cashkeeper, chamberlain,
   comptroller, consignee, controller, curator, depositary,
   depository, fiduciary, financial officer, getter, hearer, holder,
   liquidator, listener, looker, obtainer, payee, paymaster, procurer,
   purse bearer, purser, receiver, recipient, spectator, steward,
   taker, treasurer, viewer