Beanie
Context
A small, close-fitting hat worn on the back of the head
Explanation
A knitted cap, often made of wool or synthetic materials, designed to provide warmth in cold weather, and also a popular fashion accessory
Applications
She wore a beanie to keep her head warm in winter.
Beanies come in various styles, including those with or without a folded brim.
Skaters and snowboarders often wear beanies as part of their style.