Flint - Flint

Japanese: 火打石∥燧石 - ひうちいし

A type of fire starter, it refers to a stone used to start a fire. A hard, uniform stone with a sharp edge at the split is suitable, and flint and other stones rich in silica have been used. In petrology, flint refers to flint. The origins of flint are mentioned in the Hitachi no Kuni Fudoki and other sources, but in the early modern period, flint from Kuramayama in Kyoto and Yoronotaki in Mino were famous, and those from Kuramayama had a unique sales method called "fugooroshi." In the past, flints were used by striking them against each other, but later they came to be used to start a fire by striking them against a flint or a flint sickle, which was a piece of wood of a suitable size with a piece of steel set inside.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

発火具の一つで，火を打ち出すのに用いる石をいう。硬くて均質，割れ口が鋭い稜をもつ石が適しており，フリントなどとくにケイ酸分に富む石が用いられてきた。なお，岩石学でいう燧石とはフリントのことをさす。火打石の産出については《常陸国風土記》などにみえるが，近世には京都鞍馬山や美濃養老ノ滝産のものが著名で，鞍馬山のものには，〈ふごおろし〉という独得の販売法があった。　古くは互いに打ち合わせて用いたが，その後，火打金（ひうちがね）とか火打鎌などという手ごろな大きさの木片に鋼鉄片をはめこんだものに打ちつけて発火させるようになった。

出典　株式会社平凡社世界大百科事典第２版について　情報

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