Definition of bumper noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈbʌmpə(r)//
; NAmE NAmE//ˈbʌmpər//
Parts of a car
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a bar fixed to the front and back of a car, etc. to reduce the effect if it hits anything a bumper sticker (= a sign that people stick on the bumper of their cars with a message on it) The cars were bumper to bumper on the road to the coast (= so close that their bumpers were nearly touching). The cars crawled along bumper to bumper. See related entries: Parts of a car
See the Oxford Advanced American Dictionary entry: bumper