OUTRIGGER

outrigger. Outrigger, n. a beam or boom thrust out from a ship

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Out″rig′ger (?), n. 1. 1. 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.
2. 2. (Naut.) (a) A projecting support for a rowlock, extended from the side of a boat. (b) A boat thus equipped. (c) A projecting contrivance at the side of a boat to prevent upsetting, as projecting spars with a log at the end.