noun hi·er·a·ci·um \ˌhīəˈrāshēəm\

Definition of hieracium

  1. 1 capitalized :  a very large and nearly cosmopolitan genus of weedy perennial herbs (family Compositae) having simple often basal leaves and heads of yellow or reddish orange ray flowers — see orange hawkweed

  2. 2 plural hieracia or hieraciums :  any plant of the genus Hieracium

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Origin and Etymology of hieracium

New Latin, from Greek hierakion hawkweed, from hierak-, hierax hawk, from hienai to hurry — more at via

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to criticize severely

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