Definition of "rattler"

Anything that rattles.  examples

(chiefly US, informal) A rattlesnake.  examples

(chiefly British) , a passenger train.  examples

(colloquial) Any decrepit or noisy vehicle, such as a cart, carriage or train.  examples

(colloquial, dated) A loud, inconsiderate talker.  examples

(colloquial, dated) A stunning blow.  quotations  examples

(colloquial, dated) An impudent lie; a whopper.  examples