holy thistle

Noun holy thistle has 1 sense

• holy thistle(n = noun.plant) blessed thistle, lady's thistle, milk thistle, our lady's mild thistle, silybum marianum - tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America;
is a member of genus silybum, silybum
is a kind of herb, herbaceous plant