The Collaborative International Dictionary of English v.0.48:

Lechery \Lech"er*y\, n. [OE. lecherie, OF. lecherie. See
   Lecher.]
   1. Free indulgence of lust; excessive indulgence in sexual
      relations; -- used mostly of men.
      [1913 Webster]

   2. Selfish pleasure; delight. [Obs.] --Massinger.
      [1913 Webster]

WordNet (r) 3.0 (2006):

lechery
    n 1: unrestrained indulgence in sexual activity