quench (Verb) — Satisfy (thirst). ex. "The cold water quenched his thirst"
quench (Verb) — Put out, as of fires, flames, or lights. ex. "quench the flames"
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.
quench (Verb) — Suppress or crush completely. ex. "quench a rebellion"
quench (Verb) — (physics) reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance.
quench (Verb) — Cool (hot metal) by plunging into cold water or other liquid. ex. "quench steel"