English to English
1. satisfy (thirst)
The cold water quenched his thirst
2. put out, as of fires, flames, or lights
Too big to be extinguished at once, the forest fires at best could be contained|quench the flames|snuff out the candles
3. electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
4. suppress or crush completely
squelch any sign of dissent|quench a rebellion
5. reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
6. cool (hot metal) by plunging into cold water or other liquid
7. To extinguish; to overwhelm; to make an end of; -- said of flame and fire, of things burning, and figuratively of sensations and emotions; as, to quench flame; to quench a candle; to quench thirst, love, hate, etc.
8. To become extinguished; to go out; to become calm or cool.