beanie

/ˈbiː.ni/noun
Middle SchoolNot in standard dictionaries
1

A cap that fits the head closely, usually knitted from wool.

2

A head-hugging brimless cap, with or without a visor, made from triangular sections of cloth, leather, or silk joined by a button at the crown and seamed together around the sides.

3

A Beanie Baby, a small soft toy filled with beans or similar stuffing.

#informal