The Collaborative International Dictionary of English v.0.48:

Docility \Do*cil"i*ty\, n. [L. docilitas, fr. docilis: cf. F.
   docilit['e].]
   1. teachableness; aptness for being taught; docibleness.
      [Obs. or R.]
      [1913 Webster]

   2. Willingness to be taught; tractableness.
      [1913 Webster]

            The humble docility of little children is, in the
            New Testament, represented as a necessary
            preparative to the reception of the Christian faith.
                                                  -- Beattie.
      [1913 Webster]

WordNet (r) 3.0 (2006):

docility
    n 1: the trait of being agreeably submissive and manageable