3 English words descend from Proto-Germanic *smeltaną, most common first.
enamelAn opaque, glassy coating baked onto metal or ceramic objects.
smeltAny small anadromous fish of the family Osmeridae, found in the Atlantic and Pacific Oceans and in lakes in North America and northern part of Europe.
smaltA deep blue pigment made from powdered glass mixed with cobalt oxide.