缚刍

Vakṣu; Vaṅkṣu; 婆芻 (or 婆槎 or婆輸); 薄叉; 博叉; the Oxus 靑河 or Blue River, one of the 'four great rivers of Jambudvīpa', rising in the west of the Anavatapta lake (Tibet) and flowing into the north-west sea, the Caspian; cf. 西城記 1.