The Chuí, or Chuy Stream (Brazilian Portuguese: Arroio Chuí [ɐˈʁoju ʃuˈi], Rioplatense Spanish: Arroyo Chuy [aˈroʒo ˈtʃwi] or [aˈroʃo ˈtʃwi]), is a short stream on the Brazilian–Uruguayan border that is celebrated as Brazil's southernmost point.