: an occurrence (such as a building fire) that triggers a specified number of alarms
used in combination
It took 2¹/₂ hours to put out the fire, a four-alarmer that drew scores of firefighters from neighboring communities.Ron Devlin, Morning Call (Allentown, Pennsylvania), 5 Oct. 2005

Word History

First Known Use

1935, in the meaning defined above

Time Traveler
The first known use of alarmer was in 1935

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Dictionary Entries Near alarmer

Cite this Entry

“Alarmer.” Dictionary, Merriam-Webster, Accessed 23 Sep. 2023.

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