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  1.                 From WordNet dictionary, version 3.0:
                

    
                
                  
    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"
Synonyms: 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