温おん石じゃく

noun

heated stone; warming stone

A stone heated and wrapped in cloth, placed against the body for warmth; a traditional practice, now mostly historical or in folk contexts.

• 昔むかしの旅たび人びとは、温おん石じゃくを懐ふところに入いれて寒さむさをしのいだ。

  Travelers in the old days kept a heated stone inside their kimono to ward off the cold.