Any place of public resort, and hence a public place or broad street (Matt. 11:16; 20:3), as well as a forum or market-place proper, where goods were exposed for sale, and where public assemblies and trials were held (Acts 16:19; 17:17). This word occurs in the Old Testament only in Ezek. 27:13.
In early times markets were held at the gates of cities, where commodities were exposed for sale (2 Kings 7:18). In large towns the sale of particular articles seems to have been confined to certain streets, as we may infer from such expressions as "the bakers' street" (Jer. 37:21), and from the circumstance that in the time of Josephus the valley between Mounts Zion and Moriah was called the Tyropoeon or the "valley of the cheesemakers."
Easton's Bible Dictionary. M.G. Easton. 1897.