It is a bengali slang used to call a blunt male person who raped an ordinary woman.
Example in bengali:-Achcha chodu juteche ekhane,je kichchu parena.
In English:A blunt person appears here,who cant do
Slang in Hindi meaning "fucker". A person can also be called this if they behave in an idiotic manner.
Man that boy Fadu is a "Chodu"