A lesbian exhibiting the particular butch swag of plaid and/or man-jeans in an aspect befitting Paula Bunion.
I thought her at first a man of the mountain lands, with her red plaid shirt over long-johns with rustic jeans. But, alas, she brought with her a box lunch. She was of course, a lumberdyke.
Same meaning as "Nigger in the woodpile" just more "politically correct." It means there is black ancestry (or Native American) in a white person's "bloodline."
Suzie had a great, great, great uncle who was a black man. He is said to be the "Nigger in the Woodpile".
With all this political correctness, you can't say there's a nigger in the woodpile anymore, you have to say there's an African American in the Lumberyard.