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Drawbore   Webster's Revised Unabridged Dictionary (1913)

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. Weale.

 
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1. To make a drawbore in; as, to drawbore a tenon.

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

 
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