thump
1. thump \'th*mp\ vb [imit.] 1: to strike or beat with or as if with something thick or heavy so as to cause a dull sound 2: POUND, KNOCK 3: CUDGEL, THRASH : to inflict or emit a thump 2. thump n : a blow or knock with or as if with something blunt or heavy; also : the sound made by such a blow