Open English Wordnet
Nouns
(n)rattle, rattling, ralea rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders)“the death rattle” (n)rattlea baby's toy that makes percussive noises when shaken (n)rattleloosely connected horny sections at the end of a rattlesnake's tail Verbs
(v)rattlemake short successive sounds (v)rattleshake and cause to make a rattling noise