noun, verb, -ficked, -fick⋅ing.| 1. | the movement of vehicles, ships, persons, etc., in an area, along a street, through an air lane, over a water route, etc.: the heavy traffic on Main Street. |
| 2. | the vehicles, persons, etc., moving in an area, along a street, etc. |
| 3. | the transportation of goods for the purpose of trade, by sea, land, or air: ships of traffic. |
| 4. | trade; buying and selling; commercial dealings. |
| 5. | trade between different countries or places; commerce. |
| 6. | the business done by a railroad or other carrier in the transportation of freight or passengers. |
| 7. | the aggregate of freight, passengers, telephone or telegraph messages, etc., handled, esp. in a given period. |
| 8. | communication, dealings, or contact between persons or groups: traffic between the Democrats and the Republicans. |
| 9. | mutual exchange or communication: traffic in ideas. |
| 10. | trade in some specific commodity or service, often of an illegal nature: the vast traffic in narcotics. |
| 11. | to carry on traffic, trade, or commercial dealings. |
| 12. | to trade or deal in a specific commodity or service, often of an illegal nature (usually fol. by in): to traffic in opium. |

traf·fic (trāf'ĭk) n.
To carry on trade or other dealings: trafficked in liquidation merchandise; traffic with gangsters. [French trafic, from Old French trafique, from Old Italian traffico, from trafficare, to trade, perhaps from Catalan trafegar, to decant, from Vulgar Latin *trānsfaecāre : trāns-, trans- + faex, faec-, dregs; see feces.] traf'fick·er n. |