tinderbox tinderbox /ˈtɪndɝˌbɑːks/

noun

1. A box for holding tinder  ( tinderbox )
   a box for holding tinder
    In the wilderness, having a tinderbox can be essential for starting fires.
   In the wilderness, having a tinderbox can be essential for starting fires.
   
   
2. A dangerous state of affairs; a situation that is a potential source of violence  ( tinderbox )
   a dangerous state of affairs; a situation that is a potential source of violence
    The Balkans are the tinderbox of Europe
   the Balkans are the tinderbox of Europe