雁がん木ぎ鑢やすり

noun

zigzag rasp

A specialized woodworking or metalworking file with a zigzag cutting pattern. The term is technical and not commonly encountered in everyday conversation.

• 職しょく人にんは雁がん木ぎ鑢やすりで金きん属ぞくの表ひょう面めんを削けずった。

  The craftsman filed the metal surface with a zigzag rasp.