quench in WordNet English dictionary

1. satisfy (thirst)
   "The cold water quenched his thirst"
   quench  slake  allay  assuage 
   
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"
   snuff out  blow out  extinguish  quench 
   
3. suppress or crush completely
   "squelch any sign of dissent"; "quench a rebellion"
   squelch  quell  quench 
   
4. cool (hot metal) by plunging into cold water or other liquid
   "quench steel"
   quench 
   
5. reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
   quench 
   
6. electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
   quench