nana (2)EnglishOxford Dictionary of Englishnana2 /ˈnanə / (British English also nanna) ▸ noun informal one's grandmother: I grew up cooking with my nana this card is sent with lots of love from Nana, Grandad, Mum, and Dad, and all of your family. – ORIGIN mid 19th century: child's pronunciation of nanny or gran.