noun
A device used to extinguish fires, typically containing chemicals or other substances that can put out flames
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In case of a fire emergency, it is important to locate the nearest fire extinguisher and use it properly.
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Hey, make sure you know where the fire extinguisher is in case something catches on fire.
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Dude, grab that fire extinguisher and put out the flames before it gets out of control.
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She used her wit as a fire extinguisher to diffuse the heated argument.