'Lion's leaf' definitions:

Definition of 'Lion's leaf'

From: GCIDE
  • Lion's leaf \Li"on's leaf`\ (l[imac]"[u^]nz l[=e]f`) n. (Bot.) A South European plant of the genus Leontice ({Leontice leontopetalum}), the tuberous roots of which contain so much alkali that they are sometimes used as a substitute for soap. [1913 Webster]