1. topgallant - Noun
2. topgallant - Adjective
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.
Fig.: Highest; elevated; splendid.
A topgallant mast or sail.
Fig.: Anything elevated or splendid.
Source: Webster's dictionary