noun🔗Share座ぐり穴A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface."The carpenter used counterbores in the wooden tabletop so the screws wouldn't stick out. "大工は、ネジが出っ張らないように、木製のテーブルトップに座ぐり穴を使用しました。technicalmachineindustrypartbuildingChat with AIVocabulary GamePractice Reading
noun🔗Share座ぐり用工具The tool with which a counterbore is machined."The machinist carefully selected the counterbores needed to create the precise recesses for the bolt heads in the metal plate. "機械工は、金属板のボルトヘッド用の正確なくぼみを作るために必要な座ぐり用工具を慎重に選びました。machinetechnicalindustryChat with AIVocabulary GamePractice Reading
