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fire door
noun
a fire-resistant door that can be closed to stop the spread of a fire
• Hypernyms: ↑door

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noun
1. : the door or opening through which fuel is supplied to a furnace or stove
2. : a fire-resistive door; specifically : an automatic door secured in the open position by a fusible link or thermostatically operated device designed to release the door under the influence of heat and permit its closing by gravity or by weights or other contrivances

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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.
[1830-40]

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fire door noun
1. A fire-resistant door to prevent the spread of fire within a building
2. An emergency exit
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Main Entry: ↑fire

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fire door UK US noun [countable] [singular fire door plural fire doors]
a very strong door that you close to prevent fire from spreading from one room to another
Thesaurus: doors and windowshyponym parts of doors and windowsmeronym

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n. a fire-resistant door to prevent the spread of fire
■ a door to the outside of a building used only as an emergency exit

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ˈfire door [fire door] noun
a heavy door that is used to prevent a fire from spreading in a building

Useful english dictionary. 2012.