Tinderbox (noun)

1. A box or container used for storing tinder, especially dry and flammable material used for starting fires.
2. A place, situation, or thing that is highly flammable and likely to cause a fire.

Origin:

From middle english tendir + box.

Examples:

1. The campers kept their tinderbox dry and protected from the rain, as it was essential for starting fires in the woods.
2. The tinderbox was filled with dry leaves, twigs, and other flammable materials, making it easy to light a fire in any conditions.
3. The city was a tinderbox, with tensions running high and the possibility of a spark setting off a larger conflagration always present.
4. The tinderbox was made of metal and had a small door on the front, making it easy to access the contents.
5. The forest was a tinderbox, with dry brush and trees posing a serious fire risk during the hot, dry summer months.