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fire door

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

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


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Word History and Origins

Origin of fire door1

First recorded in 1830–40

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Example Sentences

The fire-tube was wrought iron, the chimney stood up by the fire-door.

Always keep the fire door shut as much as possible, as cold air thus admitted will check the fire and ruin the boiler.

Once or twice will not do it; but continually leaving the fire door open will certainly work mischief in the end.

What is the result of opening the fire-door when the engine is working steam?

The chest is heated from the subjacent grate c, upon which the fuel is laid, through the fire-door d.

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