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.
Etymology: OUT- + RIG(1): perh. partly after obs. (Naut.) outligger