What is "nonato"

Nonato, full name Raimundo Nonato de Lima Ribeiro (born July 5, 1979, in Viseu, Pará) is a Brazilian footballer who plays as a forward for Goianésia. His previous clubs include Fortaleza, Goiás, FC Seoul, Daegu FC, Ituano, Iraty, Tuna Luso, Bahia and Trindade. One of his best passages was with Rio Verde, Goias traditional team. He became top scorer during several rounds, even with the team in the relegation zone. He lost his artillery to Patrique, of Vila Nova, but saved the "Verdão do Sudoeste" (Southwest Green) from "sticking". It is often known as the top scorer Nonato. Unfortunately, he had disagreements with the board's "Verdão" and ended up leaving before the last round of Campeonato Goiano de 2012. Currently, he dispute the Campeonato Goiano de 2013 for Goianésia.