archaic or literary to deceive, trick, or beguile (somebody)
I think't no sin to cozen him that would unjustly win — Shakespeare
He's supposed to have cozened me out of four hundred dollars — Christopher Morley
cozenage /-nij/ noun
cozener noun
[prob from obsolete Italian cozzonare from Italian cozzone horse trader, from Latin cocion-, cocio trader]