Definition of masterwort

  1. :  any of several herbaceous plants (family Umbelliferae) used especially formerly in medicine: a :  a coarse European plant (Imperatoria ostruthium) with large ternate leaves b :  a European herb (Astrantia major) that has dark-colored aromatic roots and leaves mostly in a basal tuft and is sometimes cultivated for its showy compound umbels of white to rosy flowers c :  cow parsnip d :  angelica 1b

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capable of being understood in two ways

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