1. (a.) Situated above the topmast and below the royal mast; designated, or pertaining to, the third spars in order from the deck; as, the topgallant mast, yards, braces, and the like.

2. (a.) Fig.: Highest; elevated; splendid.

3. (n.) A topgallant mast or sail.

4. (n.) Fig.: Anything elevated or splendid.