D defs.my
Entry 1 sense Webster, 1913

Parasang

· Par·a·sang · IPA /ˈpɛɹəsæŋ/
01 n. A Persian measure of length, which, according to Herodotus and Xenophon, was thirty stadia, or somewhat more than three and a half miles. …
  1. 1.
    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.