WordReference Random House Unabridged Dictionary of American English © 2015
friendly fire, 
  • Business[Insurance.]a fire deliberately set and remaining contained, as in a fireplace or boiler, from which any resulting loss cannot be claimed as an insurance liability (opposed to hostile fire).
  • Military(in military combat) fire, as by artillery, by one's own forces, esp. when causing damage near or casualties to one's own troops.

  • Collins Concise English Dictionary © HarperCollins Publishers::

    friendly fire n
    1. firing by one's own side, esp when it harms one's own personnel

    'friendly fire' also found in these entries:

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