1. furnace - Noun
2. furnace - Verb
An inclosed place in which heat is produced by the combustion of fuel, as for reducing ores or melting metals, for warming a house, for baking pottery, etc.; as, an iron furnace; a hot-air furnace; a glass furnace; a boiler furnace, etc.
A place or time of punishment, affiction, or great trial; severe experience or discipline.
To throw out, or exhale, as from a furnace; also, to put into a furnace.
Source: Webster's dictionaryThe statue of Freedom has not been cast yet, the furnace is hot, we can all still burn our fingers. Georg Büchner
There are two spiritual dangers in not owning a farm. One is the danger of supposing that breakfast comes from the grocery, and the other that heat comes from the furnace. Aldo Leopold
Times of great calamity and confusion have been productive for the greatest minds. The purest ore is produced from the hottest furnace. The brightest thunder-bolt is elicited from the darkest storm. Charles Caleb Colton
Do not allow the Gypsies to lure you out behind the furnace. Lower Austria Proverb
A crucible for silver and a furnace for gold, but Allah tests the heart. Moroccan Proverb
Don't praise your furnace when the house is cold. Russian Proverb