From Longman Dictionary of Contemporary Englishquenchquench /kwentʃ/ verb [transitive] formal 1 → quench your thirst2 → quench a fire/flames→ See Verb table
Examples from the Corpus
quench• Needless to say, it shows that oil is a bargain, though perhaps less thirst quenching.• While life as a sailor was harsh, his thirst for the sea was not quenched.• They had been desires to be quenched, as he had quenched other desires over the years.• Some little flames may be individually quenched, but there is a certain pattern to them.• There would be water from the sink to quench his thirst, and that would buy him some time.• Not that this deterred him; he was determined to break one open and quench his thirst.Origin quench Old English cwencan 