The Collaborative International Dictionary of English v.0.48:

Garnishment \Gar"nish*ment\, n. [Cf. OF. garnissement
   protection, guarantee, warning.]
   1. Ornament; embellishment; decoration. --Sir H. Wotton.
      [1913 Webster]

   2. (Law)
      (a) Warning, or legal notice, to one to appear and give
          information to the court on any matter.
      (b) Warning to a person in whose hands the effects of
          another are attached, not to pay the money or deliver
          the goods to the defendant, but to appear in court and
          give information as garnishee.
          [1913 Webster]

   3. A fee. See Garnish, n., 4.
      [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]

WordNet (r) 3.0 (2006):

garnishment
    n 1: a court order to an employer to withhold all or part of an
         employee's wages and to send the money to the court or to
         the person who won a lawsuit against the employee