nana /ˈnænə/noun 2/ˈnɑːnə/ noun 2forms 1 noun2 •(informal) a grandmother, as the children in her family call her •(informal) A nanny. nana /ˈnɑːnə/ noun2 •(informal) A banana. •(UK, slang) A foolish person.You look a right nana dressed up like that. formsnanas
