Traffic \Traf"fic\, v. i. [imp. & p. p. Trafficked; p. pr. & vb. n. Trafficking.]

[F. trafiquer; cf. It. trafficare, Sp. traficar, trafagar, Pg. traficar, trafegar, trafeguear, LL. traficare; of uncertain origin, perhaps fr. L. trans across, over + -ficare to make (see -fy, and cf. G. ["u]bermachen to transmit, send over, e. g., money, wares); or cf. Pg. trasfegar to pour out from one vessel into another, OPg. also, to traffic, perhaps fr. (assumed) LL. vicare to exchange, from L. vicis change (cf. Vicar).]

1. To pass goods and commodities from one person to another for an equivalent in goods or money; to buy or sell goods; to barter; to trade.

2. To trade meanly or mercenarily; to bargain.

Source: Webster's Revised Unabridged Dictionary (1913)