n. 1 a beam, spar, or framework, rigged out and projecting from or over a ship's side for various purposes. 2 a similar projecting beam etc. in a building. 3 a log etc. fixed parallel to a canoe to stabilize it. 4 a an extension of the splinter-bar of a carriage etc. to enable another horse to be harnessed outside the shafts. b a horse harnessed in this way. 5 a an iron bracket bearing a rowlock attached horizontally to a boat's side to increase the leverage of the oar. b a boat fitted with these.
[ OUT- + RIG(1): perh. partly after obs. (Naut.) outligger ]