drawbore

from The Century Dictionary.

• noun In carpentry, a hole pierced through a tenon, nearer to the shoulder than the holes through the cheeks are to the abutment with which the shoulder is to come into contact, so that a pin when driven into it will draw these parts together.
• To make a draw-bore in: as, to drawbore a tenon.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To make a drawbore in.
• transitive verb To enlarge the bore of a gun barrel by drawing, instead of thrusting, a revolving tool through it.
• noun (Joinery) A hole bored through a tenon nearer to the shoulder than the holes through the cheeks are to the edge or abutment against which the shoulder is to rest, so that a pin or bolt, when driven into it, will draw these parts together.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A hole bored through a tenon nearer to the shoulder than the holes through the cheeks are to the edge or abutment against which the shoulder is to rest, so that a pin or bolt, when driven into it, will draw these parts together.
• verb To make a drawbore in; as, to drawbore a tenon.
• verb To enlarge the bore of a gun barrel by drawing, instead of thrusting, a revolving tool through it.