I. ˈmeltə(r) noun
( -s )
1. : one (as a melting pot) that melts or is used for melting
2. : one whose work is melting: as
a. : one who melts metal in a foundry furnace ; especially : a worker in charge of the melting and purifying of scrap iron in the production of steel
b. : one who melts and molds silver or gold for use in making jewelry
c. : one who refines magnesium crystals into pure magnesium in a crucible furnace
II.
archaic
variant of milter