tricorne

The tricorne or tricorn is a style of hat that was popular during the 18th century, falling out of style by 1800. At the peak of its popularity, the tricorne was worn as civilian dress and as part of military and naval uniforms. Its distinguishing characteristic was a practical one: the turned-up portions of the brim formed gutters that directed rainwater away from the wearer's face, depositing most of it over his shoulders. Before the invention of specialized rain gear, this was a distinct advantage.