Dictionary
tin•der•box
Pronunciation: (tin'dur-boks"), [key]—
n.
1. a box for holding tinder, usually fitted with a flint and steel.
2. a person or thing that is highly excitable, explosive, inflammable, etc.; a potential source of widespread violence:
Berlin was the tinderbox of Europe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.