The Collaborative International Dictionary of English v.0.48:

Method \Meth"od\, n. [F. m['e]thode, L. methodus, fr. Gr.
   meqodos method, investigation following after; meta` after +
   "odo`s way.]
   1. An orderly procedure or process; regular manner of doing
      anything; hence, manner; way; mode; as, a method of
      teaching languages; a method of improving the mind.
      --Addison.
      [1913 Webster]

   2. Orderly arrangement, elucidation, development, or
      classification; clear and lucid exhibition; systematic
      arrangement peculiar to an individual.
      [1913 Webster]

            Though this be madness, yet there's method in it.
                                                  --Shak.
      [1913 Webster]

            All method is a rational progress, a progress toward
            an end.                               --Sir W.
                                                  Hamilton.
      [1913 Webster]

   3. (Nat. Hist.) Classification; a mode or system of
      classifying natural objects according to certain common
      characteristics; as, the method of Theophrastus; the
      method of Ray; the Linnaean method.
      [1913 Webster]

   4. A technique used in acting in which the actor tries to
      identify with the individual personality of the specific
      character being portrayed, so as to provide a realistic
      rendering of the character's role. Also called the
      Method, method acting, the Stanislavsky Method or
      Stanislavsky System.
      [PJC]

   Syn: Order; system; rule; regularity; way; manner; mode;
        course; process; means.

   Usage: Method, Mode, Manner. Method implies
          arrangement; mode, mere action or existence. Method is
          a way of reaching a given end by a series of acts
          which tend to secure it; mode relates to a single
          action, or to the form which a series of acts, viewed
          as a whole, exhibits. Manner is literally the handling
          of a thing, and has a wider sense, embracing both
          method and mode. An instructor may adopt a good method
          of teaching to write; the scholar may acquire a bad
          mode of holding his pen; the manner in which he is
          corrected will greatly affect his success or failure.
          [1913 Webster] Methodic

WordNet (r) 3.0 (2006):

method acting
    n 1: an acting technique introduced by Stanislavsky in which the
         actor recalls emotions or reactions from his or her own
         life and uses them to identify with the character being
         portrayed [syn: method acting, method]