thump
     n 1: a heavy dull sound (as made by impact of heavy objects)
          [syn: {thumping}, {clump}, {clunk}, {thud}]
     2: a heavy blow with the hand
     v 1: move rhythmically; "Her heart was beating fast" [syn: {beat},
           {pound}]
     2: make a dull sound; "the knocker thudded against the front
        door" [syn: {thud}]
     3: hit hard with the hand, fist, or some heavy instrument; "the
        salesman pounded the door knocker"; "a bible-thumping
        Southern Baptist" [syn: {pound}, {poke}]
Source: WordNet® 2.0