What is "barbatana"

João Lacerda Filho (11 February 1929 – 29 June 2011), commonly known as Barbatana, was a Brazilian professional football coach and player. During his playing days, he was a midfielder, and played for clubs in Minas Gerais and Rio de Janeiro. As a coach, he worked mainly with Atlético Mineiro, but also coached many other clubs in Brazil and the Indonesia national under-23 team.