Outrigger
in its proper sense, a beam or spar fastened horizontally to the crosstrees or otherwise, for the purpose of extending further from the mast or topmast the backstay or other rope by which that mast or topmast is supported. The power of the stay is thus increased. The term is also applied to a contrivance used in very narrow racing boats, by which the oar is given the requisite amount of play outboard.