Jib
a large triangular sail set on a stay, forward of the fore stay-sail, between the fore-top mast-head and jibboom in large vessels. It occupies a position between the mast-head and bowsprit in cutters, schooners, and small craft, and does not necessarily run on a stay. Jibs are known by various names , according to position, etc., as inner-jib, outer-jib, standing-jib, flying-jib, spindlejib, storm-jib, jib-of-jibs, etc. A jibtopsail or balloon-jib extends toward the topmast head, and in cutter yachts is sometimes a very large sail. Also, the extended arm of a crane; or that spar of a derrick which is stepped at the bottom and connected by tackle at the top to the vertical post.