Noun

1. Partly or wholly uncleared forest, especially in North America.
2. A remote or sparsely inhabited region, especially in North America; away from big towns and from the influence of modern life.
   • 1834, David Crockett, A Narrative of the Life of, Nebraska 1987, p. 22:

     about that time, you may [...] reckon, if like me you belong to the back-woods, that I began to make up my acquaintance with hard times, and a plenty of them.

Adjective

1. Pertaining to the backwoods.
2. Rough, uncouth, coarse or crude in social matters.