definition of
commerce

[1] #1 commerce n. [commercialism, mercantilism] transactions (sales and purchases) having the objective of supplying commodities (goods and services). wn

[2] #2 commerce n. [Department of Commerce, Commerce Department, Commerce, DoC] the United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913. wn

[3] #3 commerce n. social exchange, especially of opinions, attitudes, etc.. wn