The Collaborative International Dictionary of English v.0.48:

Idolatrous \I*dol"a*trous\, a.
   1. Of or pertaining to idolatry; partaking of the nature of
      idolatry; given to idolatry or the worship of false gods;
      as, idolatrous sacrifices.
      [1913 Webster]

            [Josiah] put down the idolatrous priests. --2 Kings
                                                  xxiii. 5.
      [1913 Webster]

   2. Consisting in, or partaking of, an excessive attachment or
      reverence; as, an idolatrous veneration for antiquity.
      [1913 Webster]

WordNet (r) 3.0 (2006):

idolatrous
    adj 1: relating to or practicing idolatry; "idolatrous worship"
    2: blindly or excessively devoted or adoring