Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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rail1 a horizontal bar that extends between two posts and serves as a barrier, fence, or the like. [4 definitions]
rail2 to denounce someone or something in harsh or abusive terms; condemn (usu. fol. by against or at).
rail3 any of a number of marsh birds having brown plumage, short wings, and a lean body, found in many areas of the world.