fire alarm

Noun
  1. A shout or bell to warn that fire has broken out (synset 107279982)
    is a type of: alarm, alarum, alert, warning signal - an automatic signal (usually a sound) warning of danger
  2. An alarm that is tripped off by fire or smoke (synset 103348583)
    is a type of: alarm, alarm system, warning device - a device that signals the occurrence of some undesirable event
    same as: smoke alarm

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