Source : Webster's Revised Unabridged Dictionary (1913)

Misunderstand \Mis*un`der*stand"\, v. t. [imp. & p. p.
   {Misunderstood}; p. pr. & vb. n. {Misunderstanding}.]
   To misconceive; to mistake; to miscomprehend; to take in a
   wrong sense.

Misunderstanding \Mis*un`der*stand"ing\, n.
   1. Mistake of the meaning; error; misconception. --Bacon.

   2. Disagreement; difference of opinion; dissension; quarrel.
      ``Misunderstandings among friends.'' --Swift.

Source : WordNet®

misunderstanding
     n 1: putting the wrong interpretation on; "his misinterpretation
          of the question caused his error"; "there was no
          mistaking her meaning" [syn: {misinterpretation}, {mistaking}]
     2: an understanding of something that is not correct; "he
        wasn't going to admit his mistake"; "make no mistake about
        his intentions"; "there must be some misunderstanding--I
        don't have a sister" [syn: {mistake}, {misapprehension}]