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A '''fire extinguisher''' is a handheld, typically cylindrical, device used to extinguish small [[fire]]s. Such devices contain a fire-suppressive agent, typically under pressure, and are used by spraying this suppressive agent over the base of a fire, smothering the fire out. Fire extinguishers are typically used in an emergency, and should not be wasted on routine, controlled fires (such as a [[campfire]]).

[[File:FireExtinguisherABC.jpg|thumb|right|A fire extinguisher]]A '''fire extinguisher''' is a handheld, typically cylindrical, device used to extinguish small [[fire]]s. Such devices contain a fire-suppressive agent, typically under pressure, and are used by spraying this suppressive agent over the base of a fire, smothering the fire out. Fire extinguishers are typically used in an emergency, and should not be wasted on routine, controlled fires (such as a [[campfire]]).

Modern fire extinguishers are rated for the types of fires they are effective against:  

Modern fire extinguishers are rated for the types of fires they are effective against: