(1):
(a.) Situated above the topmast and below the royal mast; designatb, or pertaining to, the third spars in order from the deck; as, the topgallant mast, yards, braces, and the like. See Illustration of Ship.
(2):
(a.) Fig.: Highest; elevated; splendid.
(3):
(n.) A topgallant mast or sail.
(4):
(n.) Fig.: Anything elevated or splendid.