羊蹄

 

 ギシギシ on Japanese Wikipedia

羊蹄(ぎしぎし) or 羊蹄(ギシギシ) • (gishigishi) 

1. Japanese dock, Rumex japonica

   Synonyms: 大黄 (daiō), 渋草 (shibukusa), 羊蹄 (yōtei)

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).

羊(よう)蹄(てい) • (yōtei) 

1. Japanese dock, Rumex japonica
2. roots of Japanese dock used medically