tinderbox

(-bäks′)

noun

  1. Obsolete a metal box for holding tinder, flint, and steel for starting a fire
  2. any highly flammable object, structure, etc.
  3. a place or situation likely to be the source of a flare-up of trouble, war, etc.

See tinderbox in American Heritage Dictionary 4

noun
  1. A metal box for holding tinder.
  2. A potentially explosive place or situation: referred to the crowded prison as a tinderbox of suppressed violence.

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