Denotes the several courses a ship makes under the changes of wind or manœuvres. It is self-evident that if she steered a course there would be no traverse. But her course being north, and the wind from the north, it is evident she could have but two courses open to her, E.N.E., or W.N.W. The reduction of the distances run on each course, corrected for variation and lee-way, constitutes the traverse table, from which the reckoning is deduced each day up to noon. From this zig-zag set of lines we have the term Tom Cox's traverse (which see). Also, in fortification, a mound, often of parapet form, raised to cover from enfilade or reverse fire. Also, to traverse a gun or mortar. To alter its direction from right to left, or vice versâ, with handspikes, tackles, &c.