DICT.TW Dictionary Taiwan

 Dis·part, n.
 1. Gun. The difference between the thickness of the metal at the mouth and at the breech of a piece of ordnance.
    On account of the dispart, the line of aim or line of metal, which is in a plane passing through the axis of the gun, always makes a small angle with the axis.   --Eng. Cys.
 2. Gun. A piece of metal placed on the muzzle, or near the trunnions, on the top of a piece of ordnance, to make the line of sight parallel to the axis of the bore; -- called also dispart sight, and muzzle sight.