The Collaborative International Dictionary of English v.0.48:

Advoutry \Ad*vou"try\, Advowtry \Ad*vow"try\, n. [OE. avoutrie,
   avouterie, advoutrie, OF. avoutrie, avulterie, fr. L.
   adulterium. Cf. Adultery.]
   Adultery. [Obs.] --Bacon.
   [1913 Webster]