1. a dangerous state of affairs; a situation that is a potential source of violence; - Example: "the Balkans are the tinderbox of Europe"
2. a box for holding tinder;
WordNet (r) 3.0 (2006):
tinderbox
n 1: a dangerous state of affairs; a situation that is a
potential source of violence; "the Balkans are the
tinderbox of Europe"
2: a box for holding tinder