Definition of rattles:
(v) :
(transitive, ergative) To create a rattling sound by shaking or striking.
(v) :
(transitive, figurative, informal) To scare, startle, unsettle, or unnerve.
(v) :
(intransitive) To make a rattling noise; to make noise by or from shaking.
(v) :
To drive or ride briskly, so as to make a clattering.
(v) :
To make a clatter with one's voice; to talk rapidly and idly; often with on or away.
(v) :
(UK, slang) To experience withdrawal from drugs.