Definitions of quench:

• verb:   electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
• verb:   cool by plunging into cold water

  Example: "Quench metal"

• verb:   reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
• verb:   satisfy (thirst)

  Example: "The cold water quenched his thirst"

• verb:   suppress or crush completely

  Example: "Quench a rebellion"

• verb:   put out, as of fires, flames, or lights

  Example: "Quench the flames"