The Collaborative International Dictionary of English v.0.48:

Thump \Thump\, v. t. [imp. & p. p. Thumped; p. pr. & vb. n.
   Thumping.]
   To strike or beat with something thick or heavy, or so as to
   cause a dull sound.
   [1913 Webster]

         These bastard Bretons; whom our hathers
         Have in their own land beaten, bobbed, and thumped.
                                                  --Shak.
   [1913 Webster]