Any plant, especially a flowering herb, whose leaves, roots, or seeds were traditionally used to treat or cure fevers.
From 'fever' plus 'wort,' where 'wort' comes from Old English 'wyrt' meaning plant or root. This suffix appears in many historical plant names like 'figwort,' 'mugwort,' and 'St. John's wort,' representing one of the oldest herbal classification systems.
The '-wort' suffix in plant names is like a time capsule of Old English—it appears in our most famous herbal names today (St. John's wort, lungwort, etc.), showing these naming conventions are incredibly ancient and still understood by modern speakers!
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