From The Collaborative International Dictionary of English v.0.48:
Commerce \Com*merce"\ (? or ?), v. i. [imp. & p. p. Commerced; p. pr. & vb. n. Commercing.] [Cf. F. commercer, fr. LL. commerciare.] 1. To carry on trade; to traffic. [Obs.] [1913 Webster]
Beware you commerce not with bankrupts. --B. Jonson. [1913 Webster]
2. To hold intercourse; to commune. --Milton. [1913 Webster]
Commercing with himself. --Tennyson. [1913 Webster]
Musicians . . . taught the people in angelic harmonies to commerce with heaven. --Prof. Wilson. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Commerce \Com"merce\, n.
Note: (Formerly accented on the second syllable.) [F. commerce, L. commercium; com- + merx, mercis, merchandise. See Merchant.] 1. 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. [1913 Webster]
The public becomes powerful in proportion to the opulence and extensive commerce of private men. --Hume. [1913 Webster]
2. Social intercourse; the dealings of one person or class in society with another; familiarity. [1913 Webster]
Fifteen years of thought, observation, and commerce with the world had made him [Bunyan] wiser. --Macaulay. [1913 Webster]
3. Sexual intercourse. --W. Montagu. [1913 Webster]
4. A round game at cards, in which the cards are subject to exchange, barter, or trade. --Hoyle. [1913 Webster]
Chamber of commerce. See Chamber.
Syn: Trade; traffic; dealings; intercourse; interchange; communion; communication. [1913 Webster]