Definition of Saint–Peter's–wort

  1. 1a :  a plant of the genus Ascyrum (as A. stans of the southeastern U.S.) b [so called from its blooming near the time of St. Peter's feast day (June 29)] :  a European Saint-John's-wort (Hypericum quadrangulum)

  2. 2 [so called from the resemblance of the leaves to keys, traditional appurtenances of St. Peter] :  cowslip 1a

  3. 3 :  snowberry 1

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capable of being understood in two ways

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