furnace
fur.nace \'f*r-n*s\ n [ME furnas, fr. OF fornaise, fr. L fornac-, fornax; aki]n to L formus warm - more at WARM : an enclosed structure in which heat is produced (as for heating a house)
Webster's English Dictionary Webster's English Dictionaryfur.nace \'f*r-n*s\ n [ME furnas, fr. OF fornaise, fr. L fornac-, fornax; aki]n to L formus warm - more at WARM : an enclosed structure in which heat is produced (as for heating a house)