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"

Moby Thesaurus II by Grady Ward, 1.0:

110 Moby Thesaurus words for "drumming":
   arrhythmia, bang, barrage, bash, bat, beat, beating, belt, biff,
   blinding, blow, bonk, cat-and-doggish, chop, clicking, clip, clout,
   clump, crack, cut, dash, dig, dint, drippy, driving, drizzling,
   drizzly, drub, drubbing, drum, drum music, drumbeat, drumfire,
   flutter, fluttering, fusillade, heartbeat, heartthrob, hit, jab,
   knock, lick, misty, misty-moisty, mizzly, palpitant, palpitation,
   paradiddle, patter, pelt, pelting, pitapat, pitter-patter, plunk,
   pluvial, pluviose, pluvious, poke, pound, pounding, pouring,
   pulsation, pulse, punch, rainy, rap, rat-a-tat, rat-tat,
   rat-tat-tat, rataplan, rattattoo, rhythm, roll, rub-a-dub, ruff,
   ruffle, showery, slam, slog, slug, smack, smash, sock, spatter,
   spattering, splutter, spluttering, sputter, sputtering, staccato,
   streaming, stroke, swat, swing, swipe, tat-tat, tattoo, tempo,
   throb, throbbing, thrum, thrumming, thump, thumping, thwack,
   ticking, tom-tom, whack, whop, yerk