The definition of a cure is a remedy or something that will bring back health.(noun)
To cure is to restore health, to heal, or to preserve meat, or to process tobacco.(verb)
See cure in Webster's New World College Dictionary
Origin: OFr < L cura, care, concern, trouble < OL *coira < IE base *kois-, be concerned
See cure in American Heritage Dictionary 4
Origin: Middle English, from Old French, medical treatment, from Latin cūra, from Archaic Latin coisa-.
Origin: French, from Old French, from Medieval Latin cūrātus; see curate 1.
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