cackle

1. V-I If someone cackles, they laugh in a loud unpleasant way, often at something bad that happens to someone else. (儅壞事發(fā)生在他人身上時)不雅地大笑

The old lady cackled, pleased to have produced so dramatic a reaction. 老太婆刺耳地笑著，對這如此戯劇化的反應，她自己反倒還高興。

2. N-COUNT Cackle is also a noun. 咯咯的笑聲

He let out a brief cackle. 他發(fā)出短暫的咯咯聲。