A sticker bearing a printed message for display on a vehicle's bumper.
A gummed paper with a printed slogan, witticism, etc., for sticking on a vehicle's bumper.
An adhesive label
, usually applied to the bumper or back end of an automobile, and displaying a short political, promotional, philosophical, or humorous message.
He has a bumper sticker on his van that reads "faster than a speeding ticket".
Alternative spelling of bumper sticker.