drawbore

from The Collaborative International Dictionary of English v.0.48

Drawbore \Draw"bore`\, n. (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. --Weale.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Drawbore \Draw"bore`\, v. t.
   1. To make a drawbore in; as, to drawbore a tenon.
      [1913 Webster]

   2. To enlarge the bore of a gun barrel by drawing, instead of
      thrusting, a revolving tool through it.
      [1913 Webster]