The Collaborative International Dictionary of English v.0.48:

Incur \In*cur"\, v. t. [imp. & p. p. Incurred; p. pr. & vb. n.
   Incurring.] [L. incurrere to run into or toward; pref. in-
   in + currere to run. See Current.]
   [1913 Webster]
   1. To meet or fall in with, as something inconvenient,
      harmful, or onerous; to put one's self in the way of; to
      expose one's self to; to become liable or subject to; to
      bring down upon one's self; to encounter; to contract; as,
      to incur debt, danger, displeasure, penalty,
      responsibility, etc.
      [1913 Webster]

            I know not what I shall incur to pass it,
            Having no warrant.                    --Shak.
      [1913 Webster]

   2. To render liable or subject to; to occasion. [Obs.]
      [1913 Webster]

            Lest you incur me much more damage in my fame than
            you have done me pleasure in preserving my life.
                                                  --Chapman.
      [1913 Webster]

WordNet (r) 3.0 (2006):

incurring
    n 1: acquiring or coming into something (usually undesirable);
         "incurring debts is easier than paying them"