Meaning : Put out, as of fires, flames, or lights.
Example :
Too big to be extinguished at once, the forest fires at best could be contained.
Quench the flames.
Snuff out the candles.
Synonyms : blow out, extinguish, snuff out
Meaning : Electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device.
Meaning : Reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance.
Meaning : Cool (hot metal) by plunging into cold water or other liquid.
Example :
Quench steel.