The noun traffic has 4 senses (first 2 from tagged texts)
1. (14) traffic -- (the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time)
2. (1) traffic -- (buying and selling; especially illicit trade)
3. traffic -- (the amount of activity over a communication system during a given period of time; "heavy traffic overloaded the trunk lines"; "traffic on the internet is lightest during the night")
4. dealings, traffic -- (social or verbal interchange (usually followed by `with'))
Overview of verb traffic
The verb traffic has 2 senses (no senses from tagged texts)
1. traffic -- (deal illegally; "traffic drugs")
2. traffic -- (trade or deal a commodity; "They trafficked with us for gold")