Dictionary definition · thump
noun
- a heavy dull sound (as made by impact of heavy objects)
- a heavy blow with the hand
verb
- move rhythmically"Her heart was beating fast"
- make a dull sound"the knocker thudded against the front door"
- hit hard with the hand, fist, or some heavy instrument"the salesman pounded the door knocker"
Source: Open English WordNet (CC BY 4.0).