PashtoPronunciation: /ˈpʌʃtəʊ/ (also Pushtu /ˈpʌʃtuː/)Definition of Pashto noun [mass noun] the language of the Pashtuns, which belongs to the Iranian group. It is the official language of Afghanistan and is also spoken in northern areas of Pakistan. Origin:the name in PashtoPashto in other Oxford dictionaries Definition of Pashto in the US English dictionary