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English definition of “traffic”

traffic

noun [U]     /ˈtræfɪk/
CARS ETC A2 the cars, trucks, etc using a road: Traffic is heavy (= there are a lot of cars, etc) in both directions. a traffic accident Sorry we're late - we got stuck in traffic.CarsTrucks, vans and caravans
PLANES AND SHIPS the planes or ships moving around an area: air traffic controlAviationTravelling by aircraftMovement through the airBoats in general
ILLEGAL the illegal buying and selling of goods, such as drugs, weapons, etc: the traffic in illegal drugsTrafficking and racketeering
(Definition of traffic noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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