What is a "hood"?

A hood is a type of head covering that extends to cover the neck, head, and sometimes the face. Hoods can be found in a variety of clothing items, such as jackets, sweatshirts, and robes. They are often designed to provide warmth and protection from the elements, but can also be used for fashion purposes. Some hoods may feature drawstrings or other mechanisms to adjust the fit, and some may be detachable or foldable. Hoods can also be designed with additional features such as lining, fur, or ear flaps to further enhance their functionality.