• A person employed by a troupe of entertainers to address passers-byin a loud voice to attract their custom. This mode of publicity isusually associated with fairground or other open-air performancesof an unsophisticated nature. The tradition can, however, be tracedback to the theaters of ancient Greece and Rome. The main characterin Rodgers and Hammerstein's musical Carousel (1945) is theNew England fairground barker, Billy Bigelow.