What does "extinguisher" mean?

One who, or that which, extinguishes something.; A fire extinguisher.

How do you pronounce "extinguisher"?

Pronounced //ɪkˈstɪŋɡwɪʃə(ɹ)//.

Common synonyms include: fire extinguisher, acid, annihilators, asphyxiator, automatic sprinkler, carbon tet.

/ɪkˈstɪŋɡwɪʃə(ɹ)/ noun

noun ·Uncommon ·Advanced level

Noun

1
One who, or that which, extinguishes something.; A fire extinguisher.
2
a manually operated device for extinguishing small fires wordnet
3
One who, or that which, extinguishes something.; A small hollow conical instrument for putting out a candle. historical

"Where is the fire extinguisher?"

From extinguish + -er.