Panacea

Pan′a‐ce″a (?), n. [L., fr. Gr. πανάκεια fr. πανακήσ all-healing; πα̑σπα̑ν, all + ακεἰ̑σθαι to heal.]

1. A remedy for all diseases; a universal medicine; a cure-all; catholicon; hence, a relief or solace for affliction.

2. (Bot.) The herb allheal.