三棱草 Traditional form: 三稜草 Pinyin (reading): sānléngcǎo Definitions: sedge herb (Cyperus rotundus) Characters: 三 - three 棱 - squared timber; angle, corner, edge 草 - grass, herbs; straw, thatch Traditional characters: 三 - three 稜 - edge, corner, angle; protrusion; square beam 草 - grass, herbs; straw, thatch