The Collaborative International Dictionary of English v.0.48:

Drum \Drum\, v. i. [imp. & p. p. Drummed; p. pr. & vb. n.
   Drumming.]
   1. To beat a drum with sticks; to beat or play a tune on a
      drum.
      [1913 Webster]

   2. To beat with the fingers, as with drumsticks; to beat with
      a rapid succession of strokes; to make a noise like that
      of a beaten drum; as, the ruffed grouse drums with his
      wings.
      [1913 Webster]

            Drumming with his fingers on the arm of his chair.
                                                  --W. Irving.
      [1913 Webster]

   3. To throb, as the heart. [R.] --Dryden.
      [1913 Webster]

   4. To go about, as a drummer does, to gather recruits, to
      draw or secure partisans, customers, etc,; -- with for.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Drumming \Drum"ming\, n.
   The act of beating upon, or as if upon, a drum; also, the
   noise which the male of the ruffed grouse makes in spring, by
   beating his wings upon his sides.
   [1913 Webster]

WordNet (r) 3.0 (2006):

drumming
    n 1: the act of playing drums; "he practiced his drumming
         several hours every day"