What is the deffenition of band wagon?

The term "bandwagon" refers to a popular trend or activity that attracts a large number of followers, often because it is perceived as successful or fashionable. It originates from the practice of political campaigns using a wagon to attract attention, with the idea that people would join in simply because others were doing so. In a broader context, it can describe the tendency for individuals to adopt certain behaviors or beliefs simply to be part of a group.