The Collaborative International Dictionary of English v.0.48:

Whoredom \Whore"dom\, n. [OE. hordom; cf. Icel. h?rd?mr.]
   [1913 Webster]
   1. The practice of unlawful intercourse with the other sex;
      fornication; lewdness.
      [1913 Webster]

   2. (Script.) The sin of worshiping idols; idolatry.
      [1913 Webster]

            O Ephraim, thou committest whoredom, and Israel is
            defiled; they will not . . . turn unto their God.
                                                  --Hos. v. 3,
                                                  4.
      [1913 Webster]

WordNet (r) 3.0 (2006):

whoredom
    n 1: offering sexual intercourse for pay [syn: prostitution,
         harlotry, whoredom]