The difference between Main-truck and Mainmast

When used as nouns, main-truck means on a wooden mast, a circular disc (or sometimes a rectangle) of wood near or at the top of the mast, usually with holes or sheaves to reeve signal halyards, whereas mainmast means the chief, and tallest mast of a sailing ship that has more than one mast.


check bellow for the other definitions of Main-truck and Mainmast

  1. Main-truck as a noun (nautical):

    On a wooden mast, a circular disc (or sometimes a rectangle) of wood near or at the top of the mast, usually with holes or sheaves to reeve signal halyards; also a temporary or emergency place for a lookout.

  1. Mainmast as a noun (nautical):

    The chief, and tallest mast of a sailing ship that has more than one mast.