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fire door

American  

noun

  1. a door through which a boiler or furnace is fired or through which the fire is inspected.

  2. a fireproof or fire-resistant door in a building, intended to isolate an area from fire.


fire door British  

noun

  1. a door made of noncombustible material, the purpose of which is to prevent a fire from spreading within a building

  2. a similar door, leading to the outside of a building, that can be easily opened from inside; emergency exit

"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

Etymology

Origin of fire door

First recorded in 1830–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Before fleeing the fire, Kovac loaded all his valuables into a room wrapped in concrete and equipped with a fire door capable of keeping out smoke and flames for three hours.

From Los Angeles Times ● Aug. 10, 2025

Surveillance video captured Orlando entering the Capitol through a fire door on the west side of the building.

From Seattle Times ● Nov. 29, 2023

"The shared bathroom was giving off electric shocks around the shower and we didn't have a fire door either."

From BBC ● Jan. 25, 2023

I opened a fire door, which locked closed behind me and I took in my surroundings.

From The Guardian ● Feb. 14, 2019

And then, just when I thought that I might jump out of my skin from worry, the fire door opened.

From "Shelter (Book One): A Mickey Bolitar Novel" by Harlan Coben

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