The Collaborative International Dictionary of English v.0.48:

Cozenage \Coz"en*age\ (-[asl]j), n. [See Cozen, and cf.
   Cousinage.]
   The art or practice of cozening; artifice; fraud. --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cozenage
    n 1: a fraudulent business scheme [syn: scam, cozenage]