to pass goods and commodities from one person to another for an equivalent in goods or money; to buy or sell goods; to barter; to trade.-to trade meanly or mercenarily; to bargain.-to exchange in traffic; to effect by a bargain or for a consideration.-commerce, either by barter or by buying and selling; interchange of goods and commodities; trade.-commodities of the market.-the business done upon a railway, steamboat line, etc., with reference to the number of passengers or the amount of freight carried.