A square-rigged vessel, differing from a brig only in that she has a trysail mast close abaft the mainmast, on which a large trysail is hoisted.

a small sailing vessel resembling a brig, carrying a main and fore mast and a supplementary trysail mast close behind the main mast [119.21

a vessel similar to a brig with 2 masts, fully square-rigged on both masts, but with her spanker (the gaff sail at the stern, also called adriver or main-trysail) set on a seperate pole or trysail mast just aft of the mainmast.

a vessel equipped with two masts resembling the main and foremast of a ship, and a third small mast, abaft the mainmast, carrying a trysail

The largest type of two-masted sailing vessel of the era, the snow, carried square sails on both masts, with a trysail on a jacknast known as a snowmast --which was a spar set on the deck about a foot behind the mainmast and attached at the top to the mainmast. Also: A "Snow Rigged Vessel" or "Snow Rigged Brig" had similar rigging.

A ship used for slaving voyages.

A snow (pronounced "snoo") or snaw, a two-masted merchant vessel of the 16th through the 19th centuries, the largest two-masted ship of her period, had a tonnage of up to around 1,000 tons. Resembling a brig and primarily used as a merchant ship, the snow also saw war service. She carried square sails on both masts, but had a small trysail mast (also called a 'snowmast') stepped immediately abaft the mainmast.