A Korean cuss word; literally means, "pig-feet." It is an extremely derogative term for someone who is Japanese. It is what Koreans would call their Japanese captors. During the late 19th century and early 20th century, Japan forcibly annexed Korean, causing Korean cultural values to deteriorate. They were also conscripted peasants, and treated like slaves.
Do not call a Japanese person, "jjockbari," because they will likely kill you.