弓ゆみ錐ぎり

noun

bow drill

A traditional hand-operated drilling tool consisting of a bow, string, and a spindle; used for making holes in wood or other materials.

• 昔むかしの大だい工くは弓ゆみ錐ぎりで木もく材ざいに穴あなを開あけた。

  Carpenters in the past used a bow drill to make holes in wood.