The Duke is a title of nobility in the British peerage system, often associated with high social status and land ownership. Dukes typically oversee large estates and have historical roles in governance and military leadership. The title is often passed down through generations, and there are several dukedoms in the United Kingdom, each with its own unique history. In addition to the British context, the term "duke" is used in various cultures and can refer to similar noble ranks. Notable examples include Duke Ellington, an influential American jazz composer, and Duke University, a prestigious educational institution in the United States.