一切經音義 65.220

65.220

三股（又作骰同公戶反說文股髀也謂脛本曰股今取其義律文作鼓非體也）。

三股 [sāngǔ, three-pronged] (Also written as 骰, identical; fanqie: 公 [gōng] / 戶 [hù]. The Shuowen says: '股 means the thigh; the base of the shin is called 股.' The meaning is taken from this here. In the Vinaya text it is written as 鼓, which is not the standard form).