blow a fuse

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blow a fuse (third-person singular simple present blows a fuse, present participle blowing a fuse, simple past blew a fuse, past participle blown a fuse)

  1. (electricity) To overload a circuit sufficiently that a fuse protecting it melts away (or informally a circuit breaker trips), stopping current from flowing.
  2. (informal) To lose one's temper; to become enraged.
    When he learned that his daughter had eloped, he blew a fuse.