What is the meaning of Panacea?

A remedy believed to cure all disease and prolong life that was originally sought by alchemists; a cure-all.

A solution to all problems.

The plant allheal (Valeriana officinalis), believed to cure all ills.

panacea

panacea, cure-all

A particular kind of plant, believed to cure all diseases.

panacea, catholicon.

panacea

Source: wiktionary.org