drawbore

Noun

 * 1)  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

 * 1)  To make a drawbore in.
 * to drawbore a tenon
 * 1)  To enlarge the bore of a gun barrel by drawing, instead of thrusting, a revolving tool through it.