一切經音義 9.145

9.145

兩腨（又作[跳-兆+專]同時耎反說文脛腨膓也三蒼腓膓也經文作踹丁管反蹀足也踹非此用也）。

Both shanks (兩腨; also written as [跳-兆+專]; the same fanqie sh- [時] + -r- [耎]; Shuowen: "The shank is the belly of the leg"; Sancang: "The calf-belly"; sūtra texts write chuai (踹; fanqie d- [丁] + -g- [管]), which means to stamp the foot; chuai is not for this usage).