thud
/θʌd; θʌd/ n
low dull sound like that of a blow on sth soft 沉闷的声响（似撞击软物的声音）
The car hit the child with a sickening thud. 汽车把那个孩子撞了, 发出一声可怕的闷响. thud, v (-dd-) [Ipr, Ip]
move, fall or hit sth with a thud 砰然移动、 落下或打击某物
the sound of branches thudding against the walls of the hut 树枝碰击木屋墙壁发出的声音
I could hear him thudding about upstairs in his heavy boots. 我听见他穿著沉重的靴子在楼上咯咯地走来走去.