Definition of "Trade" :

noun: the skilled practice of a practical occupation

"He learned his trade as an apprentice."

noun: the commercial exchange (buying and selling on domestic or international markets) of goods and services

"Venice was an important center of trade with the East."

noun: the business given to a commercial establishment by its customers

noun: an equal exchange

noun: a particular instance of buying or selling

"I had no further trade with him."

noun: people who perform a particular kind of skilled work

"As they say in the trade."

noun: steady winds blowing from east to west above and below the equator

"They rode the trade winds going west."

verb: do business; offer for sale as for one's livelihood

verb: exchange or give (something) in exchange for

verb: turn in as payment or part payment for a purchase

"Trade in an old car for a new one."

verb: engage in the trade of

verb: be traded at a certain price or under certain conditions

"The stock traded around $20 a share."