thud

1. N-COUNT A thud is a dull sound, such as that which a heavy object makes when it hits something soft. 沉闷声

She tripped and fell with a sickening thud. 她绊倒了，发出一声吓人的闷响。

2. V-I If something thuds somewhere, it makes a dull sound, usually when it falls onto or hits something else. 发出沉闷声

She ran up the stairs, her bare feet thudding on the wood. 她跑上楼梯，光脚在木头上发出噔噔的声音。

3. V-I When your heart thuds, it beats strongly and somewhat quickly, for example, because you are very frightened or very happy. (因害怕或狂喜心脏) 怦怦跳

My heart had started to thud, and my mouth was dry. 我的心开始怦怦跳，而且嘴巴发干。