ETYM Formerly, a path, Old Eng. tred a footmark. Related to Tread.
1. The business given to a commercial establishment by its customers; SYN. patronage.
2. The commercial exchange (buying and selling on domestic or international markets) of goods and services.
3. The skilled practice of a practical occupation; SYN. craft.
Exchange of commodities between groups or individuals. Direct trade is usually known as barter, whereas indirect trade is carried out through a medium such as money.
In the 17th and 18th centuries, for example, barter between Europeans and West Africans was based on units of value called sortings. A sorting might consist of a quantity of cloth or oil. The amount of goods in each sorting varied according to supply and demand.

1. To exchange or give (something) in exchange for; SYN. swap, swop, switch.
2. To engage in the trade of; SYN. merchandise.
3. To turn in as payment or part payment for a purchase; SYN. trade in.
4. To be traded at a certain price or under certain conditions: