Source : Webster's Revised Unabridged Dictionary (1913)

Backwoods \Back"woods"\, n. pl. [Back, a. + woods.]
   The forests or partly cleared grounds on the frontiers.

Source : WordNet®

backwoods
     adj : inaccessible and sparsely populated [syn: {backwoods(a)}, {outback(a)},
            {remote}]

backwoods
     n : a remote and undeveloped area [syn: {back country}, {boondocks},
          {hinterland}]