Pronunciation: (fīur'boks"), [key]
1. the box or chamber containing the fire of a steam boiler, furnace, etc.
2. the furnace of a locomotive, where coal, oil, or other fuel is burned to generate steam.
3. a box or panel with a device for notifying the fire station of an outbreak of fire.
4. Obs.a tinderbox.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.