A first-rate ship of the line.
Of a Royal Navy ship of the line in the Napoleonic Era: having at least 100 guns across three gun decks, a complement of 850–875, and weighing approximately 2,500 tons burthen.
Superb, exceptional; of the best sort; very high quality.
In a fore-and-aft-rigged sailing boat, the sail that is set above the gaff at the top part of the mast.
A sail or either of the two sails rigged just above the course sail and supported by the topmast on a square-rigged sailing ship.