An urban center is a densely populated area that is usually the commercial, cultural, and transportation hub of a region. The term 'urban center' can refer to a city, town, or other area that has a high population density and a large number of businesses, services, and other amenities. The crossword solution for the term 'urban center' is BEE, which stands for bustling, energetic, and exciting. This accurately describes the atmosphere of an urban center, which is often characterized by a vibrant energy and a wide variety of activities.