DuckCorp Dico

Found one definition

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   淫 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 婬 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, いん /ˈiɴ/
   (noun (common) (futsuumeishi))
    (adjectival nouns or quasi-adjectives (keiyodoshi))
   licentiousness