dispart

Etymology 1

From Italian dispartire and its source, Latin dispartire.

verb

1. (transitive, now rare) To part, separate.
   The world will be whole, and refuses to be disparted. 1841, Ralph Waldo Emerson, Compensation
2. (intransitive, obsolete) To divide, divide up, distribute.

Etymology 2

noun

1. The difference between the thickness of the metal at the mouth and at the breech of a piece of ordnance.
   1854-1862, Charles Knight, "DISPART", in English Cyclopaedia 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.
2. 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.

verb

1. (transitive) To furnish with a dispart sight.
2. (transitive) To make allowance for the dispart in (a gun), when taking aim.
   Every gunner, before he shoots, must truly dispart his piece. 1583, Richard Lucars, Arte of Shooting