A peckerwood is a rural white southerner, usually poor, undereducated or otherwise ignorant and bigoted, the term gained popularity in the deep south during the early twentieth century and was meant to be derogatory. It is a reversal of the name of the red bellied woodpecker which had a patch of red on the back of it’s head and neck, therefore a peckerwood is a redneck, terms that describe similar groups of people are trailer trash or white trash but neither of those have the same effect or ring to them as peckerwood does.
From: "Peckerwood Nation" www.dailykos.com \storyonly/2006/6/28/181447/773

a racial name for white people , like cracker and peckerwood. A name used by other races to name a white person.

A word that describes ignorant loud mouth, unclassy, rural class whites. They also have the tendency being racist toward most races and are uneducated and misinformed.

In the motion picture "The Onion Field," starring James Woods and Franklyn Seales, the two actors play white-and-black convicts. At one point, Seales (as black Jimmy) says of Woods (as white Greg): "Lowdown, no-'count peckerwood."

Later in the film, black Jimmy gives white Greg as rousing blowjob.

A white person or craka

Racist term for white man. honkey, whitey, cracker

In prison, a white guy who will put up a fight.