(Also spelt shneb) An extremely large nose protruding from some unfortunates face. It's overall size and stature mean it cannot be put into the same bracket as a nose and so it becomes a whole new body part, known as a "schneb".
"Look at the size of that schneb!"
"Schneb!" (normally accompanied by pointing)
"With a schneb like that I'm surprised you can get the motorcycle helmet on!"
"For the last time, I do not have a schneb! It is a Roman nose!"