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Definition of Counterbore
1. Noun. A bit for enlarging the upper part of a hole.
Definition of Counterbore
1. n. A flat-bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head.
2. v. t. To form a counterbore in, by boring, turning, or drilling; to enlarge, as a hole, by means of a counterbore.
Lexicographical Neighbors of Counterbore
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