n. Interchange of goods, merchandise, or property of any kind; trade; traffic: used more especially of trade on a large scale, carried on by transportation of merchandise between different countries, or between different parts of the same country, distinguished as foreign commerce and internal commerce: as, the commerce between Great Britain and the United States, or between New York and Boston; to be engaged in commerce.n. Social intercourse; fellowship; mutual dealings in common life; intercourse in general.n. Sexual intercourse.n. A game of cards, played by any number of persons, in which a hand of five cards is dealt to each player, the two players having the poorest hands retiring from the game, this being continued until only two persons are left, who are declared the winners and receive prizes. If, during play, a person in the game speaks to another out of it, he forfeits his hand to him.n. Synonyms Business.n. Communication; communion; intercourse.To traffic; carry on trade; deal.To hold social intercourse; commune.