rattle

rattle (http://definr.com/rattle)

     n 1: a rapid series of short loud sounds (as might be heard with
          a stethoscope in some types of respiratory disorders);
          "the death rattle" [syn: rattling, rale]
     2: a baby's toy that makes percussive noises when shaken
     3: loosely connected horny sections at the end of a
        rattlesnake's tail
     v 1: make short successive sounds
     2: shake and cause to make a rattling noise