thrumming

Thrum \Thrum\, v. t. [imp. & p. p. {Thrummed}; p. pr. & vb. n.
   {Thrumming}.]
   1. To furnish with thrums; to insert tufts in; to fringe.
      [1913 Webster]

            Are we born to thrum caps or pick straw? --Quarles.
      [1913 Webster]

   2. (Naut.) To insert short pieces of rope-yarn or spun yarn
      in; as, to thrum a piece of canvas, or a mat, thus making
      a rough or tufted surface. --Totten.
      [1913 Webster]
    

27 Moby Thesaurus words for "thrumming":
      beating, birring, bombilation, bombinating, bombination, booming,
      burring, buzzing, clicking, droning, drumming, fluttering, hum,
      humming, low rumbling, palpitant, pounding, purring, spattering,
      spluttering, sputtering, staccato, throbbing, thumping, ticking,
      whirring, whizzing