great St John's wort


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Noun1.great St John's wort - perennial shrub having large star-shaped yellow flowers in narrowly pyramidal cymesgreat St John's wort - perennial shrub having large star-shaped yellow flowers in narrowly pyramidal cymes
St John's wort - any of numerous plants of the genus Hypericum having yellow flowers and transparently dotted leaves; traditionally gathered on St John's eve to ward off evil