What is the meaning of quench?

verb

• Satisfy (thirst. )
  • usage: "The cold water quenched his thirst"
  • synonyms: slake, allay, assuage
• Put out, as of fires, flames, or lights.
  • usage: "Too big to be extinguished at once, the forest fires at best could be contained"; "quench the flames"; "snuff out the candles"
  • synonyms: snuff out, blow out, extinguish
• Electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge. in a component or device)
• Suppress or crush completely.
  • usage: "squelch any sign of dissent"; "quench a rebellion"
  • synonyms: squelch, quell
• Reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material. by adding a suitable substance)
• Cool (hot metal) by plunging into cold water or other liquid.
  • usage: "quench steel"