A brimless, limp, conical cap fitting snugly around the head and given to a slave in ancient Rome upon manumission. It was used as a symbol of liberty by the French revolutionaries and was also worn in the United States before 1800.
A soft, closefitting cap without a visor, adopted by the French Revolutionists as a symbol of liberty.
A magic mushroom, Psilocybe semilanceata.
An unusual hot spring in Yellowstone National Park.