thump on someone or something
to pound on someone or something. Tim was angry with Roger and thumped on him a little, but decided to forgive him. Andy thumped on the bass drum for an hour.
thump something down
to throw something down so it makes a pounding noise. Nancy thumped the parcel down and caught her breath. She thumped down the parcel.
thump something out (on the piano)
to pound out music on a piano. Joel thumped a happy tune out on the piano. He thumped out a well-known tune.