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]

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]

WordNet (r) 3.0 (2006):

trustee
    n 1: a person (or institution) to whom legal title to property
         is entrusted to use for another's benefit [syn: trustee,
         legal guardian]
    2: members of a governing board [syn: regent, trustee]

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



Bouvier's Law Dictionary, Revised 6th Ed (1856):

TRUSTEE, estates. A trustee is one to whom an estate has been conveyed in
trust.
     2. The trust estate is not subject to the specialty or judgment debts
of the trustee, to the dower of his wife, or the curtesy of the husband of a
female trustee.
     3. With respect to the duties of trustees, it is held, in conformity to
the old law of uses, that pernancy of the profits, execution of estates, and
defence of the land, are the three great properties of a trust, so that the
courts of chancery will compel trustees, 1. To permit the cestui que trust
to receive the rents and profits of the land. 2. To execute such
conveyances, in accordance with the provisions of the trust, as the cestui
que trust shall direct. 3. To defend the title of the land in any court of
law or equity. Cruise, Dig. tit. 12, c. 4, s. 4.
     4. It has been judiciously remarked by Mr. Justice Story, 2 Eq. Jur.
Sec. 1267, that in a great variety of cases, it is not easy to say what the
duty of a trustee is; and that therefore, it often becomes indispensable for
him, before he acts, to seek, the aid and direction of a court of equity.
Fonb. Eq. book 2, c. 7, Sec. 2, and note c. Vide Vin. Ab. tit. Trusts, O, P,
Q, R, S, T; Bouv. Inst. Index, h.t.