thump thump /ˈθʌmp/

noun

1. A heavy blow with the hand  ( thump )
   a heavy blow with the hand
   
2. A heavy dull sound (as made by impact of heavy objects)  ( clump , clunk , thump , thud , thumping )
   a heavy dull sound (as made by impact of heavy objects)
   

verb

1. () Move rhythmically  ( pound , thump , beat )
   move rhythmically
    Her heart was beating fast
   Her heart was beating fast
   
2. () Hit hard with the hand, fist, or some heavy instrument  ( poke , thump , pound )
   hit hard with the hand, fist, or some heavy instrument
    The salesman pounded the door knocker
   the salesman pounded the door knocker
    A bible-thumping Southern Baptist
   a bible-thumping Southern Baptist
   
3. () Make a dull sound  ( thud , thump )
   make a dull sound
    The knocker thudded against the front door
   the knocker thudded against the front door