the polite way to meantion the race descriptor to a caucasian person who finds being called white offensive. It's like the n-word or r-word, and is a synonym to honkie or cracker. see http://w-word.synthasite.com/
Johnathan really hates being called the w-word, I still call him a honky cracker from time to time though.
The four letter word w-o-r-k.
My mother dropped the w-word and said that I had to go out and get a job.