Source : Webster's Revised Unabridged Dictionary (1913)

Bypath \By"path`\, n.; pl. {Bypaths}.
   A private path; an obscure way; indirect means.

         God known, my son, By what bypaths, and indirect
         crooked ways, I met this crown.          --Shak.

Source : WordNet®

bypath
     n : a side road little traveled (as in the countryside) [syn: {byway},
          {byroad}]