S: (v) thud (thud%2:39:00::), thump (thump%2:39:00::) (make a dull sound) "the knocker thudded against the front door"
S: (v) thump (thump%2:35:00::), pound (pound%2:35:00::), poke (poke%2:35:02::) (hit hard with the hand, fist, or some heavy instrument) "the salesman pounded the door knocker"; "a bible-thumping Southern Baptist"