Definition of “bumper” - English Dictionary

“bumper” in American English

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bumpernoun [ C ]

us /ˈbʌm·pər/

bumper noun [ C ] (VEHICLE PART)

a bar at the front and back of the body of a motor vehicle that keeps it from being damaged when hit

bumperadjective [ not gradable ]

us /ˈbʌm·pər/

bumper adjective [ not gradable ] (LARGE)

unusually large:

Farmers expect a bumper corn crop this year.

(Definition of “bumper” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“bumper” in Business English

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bumperadjective

uk /ˈbʌmpər/ us

producing much more than usual:

a bumper crop/harvest A bumper crop of maize is expected.
bumper sales/profits Profits are predicted to rise 15% due to bumper sales.

(Definition of “bumper” from the Cambridge Business English Dictionary © Cambridge University Press)