The bicorne or bicorn was a hat worn from the 1780s. The bicorne had the brim turned up at the front and back, completely hiding the crown. The brim was pressed in at the front to form a peak. The front-left of the hat was usually decorated with a cockade or rosette. The bicorne was traditionally part of the ceremonial uniform of the British, Frenc
Found on http://www.probertencyclopaedia.com/browse/PB.HTM
Hat of the late 18th and early 19th century wide brims were folded up to form two points.
Found on http://www.hatsuk.com/hatsuk/hatsukhtml/bible/glossary.htm
The bicorne or bicorn (two-cornered/horned or twihorn) is an archaic form of hat widely adopted in the 1790s as an item of uniform by European and American military and naval officers. It is now most readily associated with Napoléon Bonaparte but in practice most generals and staff officers of the Napoleonic period wore bicornes, and it survived
Found on http://en.wikipedia.org/wiki/Bicorne
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