A "rookie" refers to someone who is new to a particular field, profession, or activity. This term is commonly used in sports, where a rookie is a player in their first season. Rookies often face challenges as they adapt to the demands of their new role and learn from more experienced teammates. In addition to sports, the term can apply to various professions, such as law enforcement, teaching, or business. Rookies typically undergo training and mentorship to develop their skills and gain confidence in their abilities. Over time, they can transition from being inexperienced to becoming seasoned professionals.