1.the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time
2.buying and selling; especially illicit trade
3.the amount of activity over a communication system during a given period of time;
heavy traffic overloaded the trunk lines
4.social or verbal interchange (usually followed by `with')
1.deal illegally;
traffic drugs
2.trade or deal a commodity;
They trafficked with us for gold