Webster's Revised Unabridged Dictionary · 1913

Quench

Quench , transitive verb

[Old English quenchen, Anglo-Saxon cwencan in ācwencan, to extinguish utterly, causative of cwincan, ācwincan, to decrease, disappear; compare Anglo-Saxon cwīnan, ācwīnan, to waste or dwindle away.]

1.
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.
Ere our blood shall quench that fire. — Shakespeare
The supposition of the lady's death Will quench the wonder of her infamy. — Shakespeare
2.
To cool suddenly, as heated steel, in tempering.

Quench , intransitive verb

To become extinguished; to go out; to become calm or cool. [Rare]
Dost thou think in time She will not quench! — Shakespeare