outrigger

outrigger is a   Noun

Definition:

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

[3] A boat thus equipped.

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

Synonyms: