Top·gal·lant a.
1. Naut. 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. Fig.: Highest; elevated; splendid. “The consciences of topgallant sparks.”
Topgallant breeze, a breeze in which the topgallant sails may properly be carried.