Meaning of the word "fire door" in English

What does "fire door" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

fire door

US /ˈfaɪər dɔːr/
UK /ˈfaɪər dɔːr/
"fire door" picture

Noun

1.

a door that is designed to resist the spread of fire and smoke for a specified period of time

Example:
Always keep the fire door closed to prevent the spread of smoke.
The building's safety regulations require all exits to have a certified fire door.
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