A baby boomer is a person who was born during the post-World War II baby boom between 1946 and 1964. The term refers to the significant increase in birth rates that occurred after the war, as families began to grow again. Baby boomers are often associated with certain cultural, social, and economic trends of their time, including a focus on individualism, consumerism, and youth culture. They are also known for shaping many aspects of modern society, from music and fashion to politics and technology.