alarmer

noun alarm·er \ ə-ˈlär-mər \

Definition of alarmer

: 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

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First Known Use of alarmer

1935


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