1.（使）发出震颤（或碰撞）声;（使）发出格格声 When something rattles or when you rattle it, it makes short sharp knocking sounds because it is being shaken or it keeps hitting against something hard.
rattling At that moment, there was a rattling at the door. 那时，突然出现咚咚的敲门声。
英英释义
1.loosely connected horny sections at the end of a rattlesnake's tail
2.a baby's toy that makes percussive noises when shaken
3.a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders)
