society > travel > travel by water > vessel, ship, or boat > shipbuilding and repairing > [noun] > fitting out or equipping ships > furnishing with masts > pole for making spars
1611 (Jam.) Cant-spars or fire-poles, the hundreth, xxl.
1727 W. Mather (ed. 13) 410 For which they import..Cantspares.