What is the meaning of Chump?

An incompetent person, a blockhead; a loser.

A gullible person; a sucker; someone easily taken advantage of; someone lacking common sense.

The thick end, especially of a piece of wood or of a joint of meat.

A person's head or face.

To treat (someone) as a chump; to defraud or swindle (someone).

Dated form of chomp.

Source: wiktionary.org