Easton's Bible Dictionary: M. G. Easton, M.A., D.D.

Shallecheth, The gate of

I.e., "the gate of casting out," hence supposed to be the refuse gate; one of the gates of the house of the Lord, "by the causeway of the going up" i.e., the causeway rising up from the Tyropoeon valley = valley of the cheesemakers (1 Chr. 26:16).