1. A place or establishment where iron or other metals are wrought by heating and hammering; especially, a furnace, or a shop with its furnace, etc, where iron is heated and wrought; a smithy. In the quick forge and working house of thought. (Shak)
3. The act of beating or working iron or steel; the manufacture of metalic bodies. In the greater bodies the forge was easy. (Bacon) American forge, a forge for the direct production of wrought iron, differing from the old Catalan forge mainly in using finely crushed ore and working continuously. Catalan forge.