A plant that produces or contains galls, or one with bitter qualities similar to gall.
From Old English 'gall' plus '-wort' (plant), a suffix common in herbalism; used to describe plants that either produce gall-like growths or possess bitter medicinal properties.
The '-wort' suffix is incredibly common in old plant names—like mugwort, figwort, and bloodwort—creating a whole historical vocabulary of plants organized by their observable characteristics or uses rather than scientific classification.
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