Extinguisher \Ex*tin"guish*er\, n. One who, or that which, extinguishes; esp., a hollow cone or other device for extinguishing a flame, as of a torch or candle. [1913 Webster] {fire extinguisher} a portable device designed to deliver chemicals, usually in a stream, that can suppress or extinguish a fire. Examples of fire extinghuishers are a {carbon dioxide extinguisher}, or {CO2 extinguisher}, and {soda-acid extinguisher}. [PJC]