Meaning

• Pedestrians or vehicles on roads, or the flux or passage thereof.

  "The traffic is slow during rush hour."

• Commercial transportation or exchange of goods, or the movement of passengers or people.

• Illegal trade or exchange of goods, often drugs.

• Exchange or flux of information, messages or data, as in a computer or telephone network.

• Commodities of the market.

Meaning

• To pass goods and commodities from one person to another for an equivalent in goods or money; to buy or sell goods

• To trade meanly or mercenarily; to bargain.

• To exchange in traffic; to effect by a bargain or for a consideration.