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English definition of “airbag”

airbag

noun [C] uk   /ˈeə.bæɡ/ us    /ˈer-/
a bag in a vehicle that automatically fills with air if the vehicle is involved in an accident, in order to protect the driver or a passenger from injury: In the event of a collision, the airbag stops the driver of the car from hitting his or her chest on the steering wheel.The interior of vehicles
(Definition of airbag from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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