The Collaborative International Dictionary of English v.0.48:

Boor \Boor\ (b[=oo]r), n. [D. boer farmer, boor; akin to AS.
   geb[=u]r countryman, G. bauer; fr. the root of AS. b[=u]an to
   inhabit, and akin to E. bower, be. Cf. Neighbor, Boer,
   and Big to build.]
   1. A husbandman; a peasant; a rustic; esp. a clownish or
      unrefined countryman.
      [1913 Webster]

   2. A Dutch, German, or Russian peasant; esp. a Dutch colonist
      in South Africa, Guiana, etc.: a boer.
      [1913 Webster]

   3. A rude ill-bred person; one who is clownish in manners.
      [1913 Webster]

WordNet (r) 3.0 (2006):

boor
    n 1: a crude uncouth ill-bred person lacking culture or
         refinement [syn: peasant, barbarian, boor, churl,
         Goth, tyke, tike]