IPA: /ˈsmɛltəri/
KK: /ˈsmɛltəri/
A building or place where metal is melted and purified.
The workers at the smeltery carefully monitored the temperature of the furnace.
Smeltery → The word is formed from "smelt" (from Old English *smealtan*, meaning to melt or fuse) and the suffix "-ery" (meaning a place associated with a specific activity). A smeltery is a place where metals are melted or fused.
Think of a place where metals are 'melted' ('smelt') — that's what a smeltery is, a location for melting metals.