society > travel > travel by water > vessel, ship, or boat > equipment of vessel > masts, rigging, or sails > sail > [noun] > material of sails > piece of canvas strengthening sail > in direction of buntline
1794 D. Steel I. 86 Buntline Cloth, the lining sewed up the sail, in the direction of the buntline, to prevent the sail being chafed.