noun🔗ShareA 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. "technicalmachineindustrypartbuildingChat with AIVocabulary GamePractice Reading
noun🔗ShareThe 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. "machinetechnicalindustryChat with AIVocabulary GamePractice Reading
