Holy thistle Meaning, Definition & Usage

  1. noun tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America
    Silybum marianum; milk thistle; lady's thistle; Our Lady's mild thistle; blessed thistle.

WordNet


Definitions
  1. (Bot.), the blessed thistle. See under Thistle.

Webster 1913