mizzenmast

n. rear or aft mast, third mast (Nautical)

The mast of a sailing ship is a tall vertical pole which supports the sails. Larger ships have several masts, with the size and configuration depending on the style of ship.Until the 20th century, a ship's masts would be wooden spars, originally constructed from a single straight tree trunk. As ship sizes increased, taller masts were constructed by lashing up to three spars together. A ship's masts are named from bow to stern (front to back):Fore-mast - the first mast, or the mast fore of the main-mast.Sections: Fore-mast lower — Fore topmast — Fore topgallant mastMain-mast - the tallest mast, usually located near the centre of the ship.Sections: Main-mast lower — Main topmast — Main topgallant mast — royal mast (if fitted)Mizzen-mast - the third mast, or the mast immediately aft of the main-mast. Typically shorter than the fore-mast.Sections: Mizzen-mast lower — Mizzen topmast — Mizzen topgallant mastJigger-mast - the fourth mast, although ships with four or more masts were uncommon, or the aft most mast where it is smallest on vessels of less than four masts.Sections: Jigger-mast lower — Jigger topmast — Jigger topgallant mast
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Noun
1. third mast from the bow in a vessel having three or more masts; the after and shorter mast of a yawl, ketch, or dandy
(synonym) mizenmast, mizzen, mizen
(hypernym) mast

(n.)
The hindmost mast of a three-masted vessel, or of a yawl-rigged vessel.
  

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