一切經音義 14.158

14.158

鞦轡（上七遊友馬紂也或作䋺鞧皆一也下悲媚反馬勒也從絲從叀叀音衛經中從車從口作轡俗字也）。

Crupper and reins (鞦轡: the upper character [crupper (鞦)] is 七 [qi] + 遊 [you] [qiū]; the crupper of a horse. It is also written as 䋺 or 鞧; all are identical. The lower character [bridle / reins (轡)] is 悲 [bei] + 媚 [mei] [bèi]; a horse's bridle. Composed of silk (糹/絲) and 叀; 叀 is pronounced 衛 [wèi]. In sūtras it is written with cart (車) and mouth (口) as 轡, which is a vulgar character).