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fire alarm

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noun

a signal that warns that a fire has started.
a bell, buzzer, siren, horn, etc., that provides such a signal.

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Origin of fire alarm

An Americanism dating back to 1840–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for fire alarm

fire alarm

noun

a device to give warning of fire, esp a bell, siren, or hooter
a shout to warn that a fire has broken out
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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