Saint John's wort(redirected from Saint John'swort)
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Saint John's wortalso Saint John's·wort (jŏnz′wûrt′, -wôrt′)
1. Any of various herbs or shrubs of the genus Hypericum, having opposite leaves and yellow flowers with five petals and numerous stamens. Also called hypericum.
2. A preparation made from one of these plants (H. perforatum), used in herbal medicine especially as an antidepressant.
[From its being gathered on Saint John's Eve to ward off evil.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Saint John's wort
[C15: so named because it was traditionally gathered on Saint John's Eve (June 23) as a protection against evil spirits]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014