Pronunciation: (fīur'stôrm"), [key]
1. an atmospheric phenomenon, caused by a large fire, in which the rising column of air above the fire draws in strong winds often accompanied by rain.
2. a raging fire of great intensity, as one fueled by oil or gas, that spreads rapidly. Also,fire' storm".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.