一切經音義 29.43

29.43

龜毛（上軌危反白虎通云龜之言久也說文龜舊也外骨而內肉者也字象四足頭尾之形也）。

Tortoise hair 龜毛 (The upper character has the fanqie gui + wei; the Baihu tong says: “Tortoise [gui] signifies longevity [jiu].” The Shuowen says: “A tortoise means old; that which has bone outside and flesh inside; the character depicts the shape of four legs, head, and tail”).