ALL meanings of counterbore
coun·ter·bore
C c - noun counterbore a tool for enlarging a drilled hole for a portion of its length, as to permit sinking a screw head. 1
- noun counterbore the portion of the hole so enlarged. 1
- verb with object counterbore to enlarge (a drilled hole) along part of the length of the hole by drilling with a bit having a greater diameter. 1
- noun counterbore A drilled hole that has a flat-bottomed enlargement at its mouth. 1
- noun counterbore A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface. 0
- noun counterbore The tool with which a counterbore is machined. 0
- verb counterbore (Transitive Verb) To create such a cylindrical recess. 0