What is the definition of a 'beret'?

The term 'beret' refers to a specific type of hat characterized by its soft, round, flat crown and typically made of wool or a wool blend. The defining feature is that it lacks a visor, allowing it to fit snugly against the head, often featuring a tight headband that provides a fitted look. Berets are commonly associated with military uniforms, fashion, and various cultural expressions, making them a recognizable symbol in many contexts. The other options, such as a formal military jacket, a style of formal shoe, and a type of necktie, do not accurately describe a beret and instead refer to entirely different articles of clothing or accessories.