Sentence:  “The <WSD>r-word</WSD> is no more acceptable to American Indians than the n-word is to blacks,” one woman stated succinctly in a recent "Post" letter to the editor .... 
Meaning of the word marked with <WSD> tags:  The word "redskin" or "redskins" (including "Redskins" as a team name) regarded as a vulgar or taboo word.