- The definition of a rattletrap is something old and worn out.
An example of a rattletrap is a heavily used and damaged 20 year old car that is still being driven.
An old rattletrap.
rattletrap definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
anything worn out, rickety, or rattling; esp., a dilapidated old automobile
rattletrap definition by American Heritage Dictionary
A rickety, worn-out vehicle.