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De - Pt| English Dictionary: counterbore | by the DICT Development Group |
| 3 results for counterbore | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Counterbore \Coun"ter*bore`\ (-b?r`), n. 1. A flat-bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head. 2. A kind of pin drill with the cutting edge or edges normal to the axis; -- used for enlarging a hole, or for forming a flat-bottomed recess at its mouth. | |
| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Counterbore \Coun`ter*bore"\ (koun`t?r-b?r"), v. t. To form a counterbore in, by boring, turning, or drilling; to enlarge, as a hole, by means of a counterbore. | |
