A bandanna is a type of SCARF that is typically made from cotton or silk and is square in shape. It is commonly used as a HEADSCARF, NECKERCHIEF, HANDKERCHIEF, or even a SCARF. The term 'bandanna' is derived from the Hindi word 'bandhna, ' which means 'to tie.' Bandannas are often brightly colored and patterned, and have been popular since the 19th century. They are often used for fashion purposes, but can also be used to protect the head and neck from the sun or wind.