[puhsh-toh] 
| an Indo-European, Iranian language that is the official language of Afghanistan and the chief vernacular of the eastern part of the nation. |
| Pash·to (pŭsh'tō) n. An Iranian language that is the principal vernacular language of Afghanistan and parts of western Pakistan. Also called Afghan. [Persian pashtu, from Pashto pašto, perhaps ultimately from Iranian *parsāwa-, border, border people.] |
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