pellitory

noun pl. pellitories -·ries

1. any of a genus (Parietaria) of plants of the nettle family, often grown as an ornamental
   in full wall pellitory
2. a Mediterranean plant (Anacyclus pyrethrum) of the composite family, whose root was formerly used to relieve toothache
   in full pellitory of Spain

Etymology: altered < ME peritorie < OFr paritoire < L parietaria < parietarius, of walls < paries: see paries