Also known as: バイコケット, 罗宾汉帽, chapeau_a_bec
A hat with a long brim that tapers into a sharp point, much like a bird's beak. Sometimes adorned with a feather.
Examples
In modern culture it is most associated with Robin Hood.
Historically, the hat was unisex, and popular in Western Europe from the 13th to the 16th century.