The Collaborative International Dictionary of English v.0.48:

Molestation \Mol`es*ta"tion\, n. [Cf. F. molestation.]
   The act of molesting, or the state of being molested;
   disturbance; annoyance.
   [1913 Webster]

WordNet (r) 3.0 (2006):

molestation
    n 1: the act of subjecting someone to unwanted or improper
         sexual advances or activity (especially women or children)
    2: the act of tormenting by continued persistent attacks and
       criticism [syn: harassment, molestation]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

MOLESTATION, Scotch law, The name of an action competent to the proprietor
of a landed estate, against those who disturb his possession, It is chiefly
used in questions of commonty, or, of controverted marches. Ersk. Prin. B.
4, t. 1, n. 48.