quell

Short definition from Wiktionary

Verb

1. 1
   To subdue, put down, or silence (someone or something); to force (someone) to submit.
2. 2
   To suppress, to put an end to (something); to extinguish.
3. 3
   To kill.
4. 4
   To be subdued or abated; to diminish.
5. 5
   To die.

Noun

1. 1
   A subduing.
2. 2
   A source, especially a spring.
3. 3
   An emotion or sensation which rises suddenly.