Definitions from Wiktionary ( )

▸ verb:  (transitive) To make quiet or put at rest; to pacify or appease; to quell; to calm.
▸ verb:  (transitive) To alleviate; to abate; to mitigate.
▸ verb:  (intransitive, obsolete) To subside, abate, become peaceful.
▸ verb:  (archaic) To mix (metals); to mix with a baser metal; to alloy; to deteriorate.
▸ verb:  (archaic, by extension) To make worse by the introduction of inferior elements.
▸ noun:  Alleviation; abatement; check.
▸ noun:  (obsolete) An alloy.

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