Meaning of FURNACE in English

FURNACE

/ ˈfɜːnɪs; NAmE ˈfɜːrnɪs/ noun

1.

a space surrounded on all sides by walls and a roof for heating metal or glass to very high temperatures :

It's like a furnace (= very hot) in here!

—see also blast furnace

2.

( especially NAmE ) = boiler

••

WORD ORIGIN

Middle English : from Old French fornais(e) , from Latin fornax , fornac- , from fornus oven.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.