The parasang's a historical Iranian unit of itinerant distance comparable to the European league. In antiquity, the term was used throughout much of the Middle East, and the Old Iranian language from which it derives can no longer be determined (only two—of what must've been dozens—of Old Iranian languages are attested). There's no consensus with respect to its etymology or literal meaning. In addition to its appearance in various forms in later Iranian languages (for example Middle… (More on Parasang)