A swindler; a cheat or con-man.
A word in the vocative case
The vocative case
Something said to (or as though to) a particular person or thing; an entreaty, an invocation.
Of or pertaining to calling; used in calling or vocation.
Used in address; appellative (said of that case or form of the noun, pronoun, or adjective, in which a person or thing is addressed). For example "Domine, O Lord"