Firebreak

noun

Definitions

Noun
  1. 1
    An area cleared of all flammable material to prevent a fire from spreading across it.

    "The firefighters used a bulldozer to clear a firebreak in the forest to try to contain the forest fire."

  2. 2
    a narrow field that has been cleared to check the spread of a prairie fire or forest fire wordnet
  3. 3
    Any separating barrier. figuratively

    "That policy could consist of a statement that the declaring nation would not be the first to use nuclear weapons. This would strengthen the firebreak between the use of conventional and nuclear weapons."

Etymology

From fire + break.

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