1.Definition: a baby's toy that makes percussive noises when shaken

Category: Objects

2.Definition: a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders)

"The death rattle"

Related Noun(s):rale, rattling

Category: General

3.Definition: loosely connected horny sections at the end of a rattlesnake's tail

Category: Animals