一切經音義 21.321

21.321

如鑽燧（鑽則官反燧徐醉反鑽謂木中取火燧謂鏡中取火也淮南子曰陽燧見日則熯而為火方諸見月則津而為水許叔重曰陽燧五石之銅精仰日則得火方諸五石之精作圓器以似仰月則得水也燧又作鐆也）。

如鑽燧 [Like drilling for fire with a burning-mirror or fire-drill] (鑽 is *twan* [則官反]; 燧 is *zwiH* [徐醉反]. 鑽 refers to obtaining fire from wood; 燧 refers to obtaining fire from a mirror. The Huainanzi states: 'When the solar mirror sees the sun, it flares into fire; when the lunar mirror sees the moon, it exudes water.' Xu Shuzhong [Xu Shen] says: 'The solar mirror is the essence of copper among the five stones; turned up toward the sun, fire is obtained. The lunar mirror is the essence among the five stones; fashioned into a round vessel to resemble [the moon] turned up toward the moon, water is obtained.' 燧 is also written 鐆).