Answer:
In prison/jail slang, a peckerwood is a white prisoner willing to fight or kill to keep from being robbed or raped by other inmates. That's a generic answer. Openly they are white men and white females that have been incarcerated and proven tough and "true to their race". They aren't as "hardcore" as the aryan nation,however they run favors for the Aryans and at any point can be promoted to aryan brotherhood membership.