English
furnacer
From furnace + -er.
Formed from furnace + -er
Proto-Indo-European *gʷʰer- ‘to be warm’
…
Latin fornus
Latin fornāx ‘a furnace, oven, kiln’
Old French fornais
Middle English forneys ‘a furnace’
English furnace
Today it means
noun A person employed to operate a furnace.
Language periods are conventional ranges, not dates for this word.
Etymograph / furnacer