"rattles" in the noun sense
1. rattle, rattling, rale
a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders
"the death rattle"
a baby's toy that makes percussive noises when shaken
loosely connected horny sections at the end of a rattlesnake's tail
"rattles" in the verb sense
make short successive sounds
shake and cause to make a rattling noise
Source: WordNet® (An amazing lexical database of English)
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