The Collaborative International Dictionary of English v.0.48:

Narrow-minded \Nar"row-mind`ed\, a.
   Of narrow mental scope; lacking tolerance or breadth of view;
   illiberal; mean. Opposite of broad-minded, open-minded,
   liberal. [WordNet sense 2] [Narrower terms: dogmatic,
   dogmatical; little, petty, small, small-minded]

   Syn: narrowminded, narrow, illiberal, intolerant.
        [1913 Webster + WordNet 1.5]

   2. Capable of being shocked by behavior of others. Opposite
      of unshockable. [WordNet sense 1]

   Syn: shockable.
        [WordNet 1.5 +PJC] -- Nar"row-mind`ed*ness, n.
        [1913 Webster]

WordNet (r) 3.0 (2006):

narrow-mindedness
    n 1: an inclination to criticize opposing opinions or shocking
         behavior [syn: narrow-mindedness, narrowness] [ant:
         broad-mindedness]