Definition of commerce

• n. - The exchange or buying and selling of commodities; esp. the exchange of merchandise, on a large scale, between different places or communities; extended trade or traffic.
• n. - Social intercourse; the dealings of one person or class in society with another; familiarity.
• n. - Sexual intercourse.
• n. - A round game at cards, in which the cards are subject to exchange, barter, or trade.
• v. i. - To carry on trade; to traffic.
• v. i. - To hold intercourse; to commune.