\Par"a*sang\, n. [L. parasanga, Gr. ?, from Old
Persian; cf. Per. farsang.]
A Persian measure of length, which, according to Herodotus
and Xenophon, was thirty stadia, or somewhat more than three
and a half miles. The measure varied in different times and
places, and, as now used, is estimated at from three and a
half to four English miles.