our lady's mild thistle

1 definition found

our lady's mild thistle - WordNet (r) 2.1 (2005) :

  Our Lady's mild thistle
      n 1: tall Old World biennial thistle with large clasping white-
           blotched leaves and purple flower heads; naturalized in
           California and South America [syn: milk thistle, lady's thistle
           , Our Lady's mild thistle, holy thistle,
           blessed thistle, Silybum marianum]