pellitory

pellitory [pel′i tôr΄ē]
n.
pl. pellitoriesaltered < ME peritorie < OFr paritoire < L parietaria < parietarius, of walls < paries: see PARIES
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

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pel·li·to·ry (pĕlʹĭ-tôr'ē, -tōr'ē) n. pl. pel·li·to·ries
1. A small Mediterranean plant (Anacyclus pyrethrum) containing a volatile oil once used for the relief of toothache and facial neuralgia.
2. Any of various monoecious plants of the genus Parietaria, having long narrow leaves with hairy tufts at the base and apetalous flowers.
  [Middle English peletre, peletori, from Old French piretre, peletre, from Latin pyrethrum. See pyrethrum.]

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