Trade  —n. 1 a buying and selling. B this between nations etc. C business conducted for profit (esp. As distinct from a profession). D business of a specified nature or time (christmas trade; tourist trade). 2 skilled craft practised professionally. 3 (usu. Prec. By the) people engaged in a specific trade (the trade will never agree). 4 us transaction, esp. A swap. 5 (usu. In pl.) Trade wind. —v. (-ding) 1 (often foll. By in, with) engage in trade; buy and sell. 2 a exchange in commerce. B exchange (insults, blows, etc.). C us swap. 3 (usu. Foll. By with, for) have a transaction with a person for a thing.  trade in (often foll. By for) exchange (esp. A used car) in part payment for another. Trade off exchange, esp. As a compromise. Trade on take advantage of.  tradable adj. Tradeable adj. [low german, = track: related to *tread]