trading up your mattress for one that is more stable and less likely to move when your partner moves is a wise idea.
Next year they would buy some boats or have them built, and do some trading up and down the river.
They were trading up the Senegal early in the seventeenth century, and there they are at the present day.
During this period he spent his time chiefly in trading up and down the Assiniboine and Red Rivers.
He was trading up to Parsonsfield, and business run down, so he wound up there, and thought he'd make a new start.
late 14c., "path, track, course of action," introduced by the Hanse merchants, from Middle Dutch or Middle Low German trade "track, course" (probably originally of a trading ship), cognate with Old English tredan (see tread). Sense of "one's habitual business" (1540s) developed from the notion of "way, course, manner of life" (mid-15c.); sense of "buying and selling" is first recorded 1550s. Trade wind (1640s) has nothing to do with commerce, but preserves the obsolete sense of "in a habitual or regular course." Trade union is attested from 1831.
1540s, "to tread a path," from trade (n.). Meaning "to occupy oneself (in something)" is recorded from c.1600. The U.S. sports team sense of "to exchange one player for another" is attested from 1899. Related: Traded; trading. To trade down is attested from 1942. Trade-in in reference to used cars is recorded from 1917. Trading post is recorded from 1796.
Business or commerce; economic activity.