n. (Naut.) The mast erected at the head of the foremast, and at the head of which stands the fore-topgallant mast; the mast next above the foremast. See Ship. [ 1913 Webster ]
n. the mast next above the mainmast. [ WordNet 1.5 ]
n. (Naut.) The second mast, or that which is next above the lower mast, and below the topgallant mast. [ 1913 Webster ]