01 n. 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 s…
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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.
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2.
A projecting support for a rowlock, extended from the side of a boat.(Naut.)
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3.
A projecting frame used to support the elevator or tail planes, etc.(Aeronautics)