The Collaborative International Dictionary of English v.0.48:
Goutweed \Gout"weed`\, Goutwort \Gout"wort`\n. [So called from
   having been formerly used in assuaging the pain of the gout.]
   (Bot.)
   A coarse umbelliferous plant of Europe (Aegopodium
   Podagraria); -- called also bishop's weed, ashweed, and
   herb gerard.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Bishop's-weed \Bish"op's-weed`\, n. (Bot.)
   (a) An umbelliferous plant of the genus Ammi.
   (b) Goutweed ([AE]gopodium podagraria).
       [1913 Webster]