thud
nounUK /θʌd/
US /θʌd/
A thud is the low, heavy sound something makes when it falls and hits the ground.
The heavy book fell off the shelf with a loud thud.
OTHER MEANINGS
2. To make a dull, heavy sound when hitting something.
The ball thudded against the wall.
3. To hit or fall with a heavy, dull sound.
He thudded down onto the sofa, tired after the long walk.
4. A heavy blow or the dull sound of one.
She felt a thud on her back when the door swung open.