1 [transitive]informalto hit someone very hard with your hand closed:
If you don't shut up, I'm going to thump you!
She thumped the table with her fist.
2 [intransitive,transitive always + adverb/preposition]CSto hit against something loudly:
His feet thumped loudly on the bare boards.
He thumped his cup down on the table.
3 [intransitive always + adverb/preposition]to walk or run with your feet making a loud heavy sound as they touch the ground:
Stella came thumping down the stairs.
4 [intransitive]if your heart thumps, it beats very strongly and quickly because you are frightened or excited:
My heart was thumping inside my chest.
WORD FOCUS: hit WORD FOCUS: hit with your fist:punch, thump, bash with your open hand as a punishment:smack, spank, slap with a hammer:bang, hammer in order to get attention:bang, knock, tap, hammer accidentally:bump into, crash into, strike, bang, knock, collide (with) ➔ See alsohit
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.