noun (n)

• (Greek mythology) the goddess of healing; daughter of Aesculapius and sister of Hygeia(noun.person)

  source: wordnet30
• hypothetical remedy for all ills or diseases; once sought by the alchemists(noun.artifact)

  Synonym:
  catholicon, cure-all, nostrum
  

  source: wordnet30
• A remedy for all diseases; a universal medicine; a cure-all; catholicon; hence, a relief or solace for affliction.(noun)

  source: webster1913