(1)   The skilled practice of a practical occupation
"He learned his trade as an apprentice"
(2)   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"
"They are accused of conspiring to constrain trade"
(3)   The business given to a commercial establishment by its customers
"Even before noon there was a considerable patronage"
(4)   An equal exchange
"We had no money so we had to live by barter"
(5)   A particular instance of buying or selling
"It was a package deal"
"I had no further trade with him"
"He's a master of the business deal"
(6)   People who perform a particular kind of skilled work
"He represented the craft of brewers"
"As they say in the trade"
(7)   Steady winds blowing from east to west above and below the equator
"They rode the trade winds going west"


(8)   Exchange or give (something) in exchange for
(9)   Turn in as payment or part payment for a purchase
"Trade in an old car for a new one"
(10)   Engage in the trade of
"He is merchandising telephone sets"
(11)   Be traded at a certain price or under certain conditions
"The stock traded around $20 a share"