barter

/ˈbɑːtər/ verb [I or T] COMMERCE

Definition

› to exchange goods or services for other things rather than for money: barter (sth) for sth Cheap manufactured goods were bartered by the traders for all kinds of tropical products.

› to discuss and come to an agreement about the price of something: He bartered down the price of the flat and saved thousands of pounds.barter with sb You need to barter with the cell phone company to get the plan you want at the price you want. → Compare bargain, haggle

(Definition of barter verb from the Cambridge Business English Dictionary © Cambridge University Press)