Meaning of SILYBUM MARIANUM

WordNet Dictionary
	Definition:		[n]  tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America
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	Synonyms:		blessed thistle, holy thistle, lady's thistle, milk thistle, Our Lady's mild thistle
	See Also:		genus Silybum, herb, herbaceous plant, Silybum