Cobain, KurtCo‧bain, Kurt /kəʊˈbeɪn, kɜːt $ kɜːrt/(1967–94) a US singer and songwriter with the group Nirvana, who developed a new style of rock music called ‘Grunge’, which was popular in the early 1990s. He killed himself in 1994. He was married to Courtney Love.