Spar, n.
 1. Naut. A general term any round piece of timber used as a mast, yard, boom, or gaff.
 2. Arch. Formerly, a piece of timber, in a general sense; -- still applied locally to rafters.
 3. The bar of a gate or door. [Obs.]
 Spar buoy Naut., a buoy anchored by one end so that the other end rises above the surface of the water.
 Spar deck Naut., the upper deck of a vessel; especially, in a frigate, the deck which is continued in a straight line from the quarter-deck to the forecastle, and on which spare spars are usually placed. See under Deck.
 Spar torpedo Naut., a torpedo carried on the end of a spar usually projecting from the bow of a vessel, and intended to explode upon contact with an enemy's ships.


 spar buoy
      n : a buoy resembling a vertical log