any device, such as a spoiler, that reduces air resistance and increases the stability of a car, aircraft, etc
air dam in American English
noun
Automobiles
a spoiler mounted at the front of an automobile to reduce air flow on the underside of the chassis to increase stability
Word origin
[1970–75]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: consciousness-raising, relational database, salsa, stress test, urban legend
Examples of 'air dam' in a sentence
air dam
The new car certainly looks the part, with aggressive, sharp looks, dramatic rear wing and dynamic front air dam.
Times, Sunday Times (2006)
There are subtle changes - such as a blow-moulded bumper with integrated fog lamps and an air dam that improves aerodynamics.