一切經音義 99.116

99.116

固鍇（上音固集作周誤也下界諧反言鍇堅也說文云九江謂鐵為鍇從金皆亦聲）。

固鍇 (Solid iron: the first is pronounced *gù*; in the collected text it is written as 周, which is an error; the second is *kǎi* [fanqie: 界諧], meaning *kǎi* is hard. The *Shuowen jiezi* states: "In Jiujiang, iron is called *kǎi*." It is classified under 'metal' (金) with 皆 also serving as phonetic).