melter

Short definition from Wiktionary

Noun

1. 1
   A person or thing that melts.
2. 2
   A furnace used for melting iron in a foundry.
3. 3
   A laborer who operates such a furnace.
4. 4
   A variety of peach in which the flesh parts freely from the stone when ripe, also known as a free-stone.
5. 5
   Obsolete spelling of milter.