Outrigger

Any spar or projecting timber run out for temporary use, as from a ship's mast, to hold a rope or a sail extended, or from a building, to support hoisting teckle.

A projecting support for a rowlock, extended from the side of a boat.

A boat thus equipped.

A projecting contrivance at the side of a boat to prevent upsetting, as projecting spars with a log at the end.