Quell v. i. : To die.

Quell v. i. : To be subdued or abated; to yield; to abate.

Quell v. t. : To take the life of; to kill.

Quell v. t. : To overpower; to subdue; to put down.

Quell v. t. : To quiet; to allay; to pacify; to cause to yield or cease; as, to quell grief; to quell the tumult of the soul.

Quell n. : Murder.

Example:
Are Army troops returning home to Quell homeland chaos due to economic breakdown?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, transitive verb, Middle English, Old English, Custom Search, glossary, english, language, ESL, Search, kwel, Etymology, cwellan, Old High German.

Defination from the web:
quell from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Etymology: Middle English, to kill, quell, from Old English cwellan to kill; akin to Old High German quellen to torture, kill, quāla torment, ...