/ Dictionary / Index R railroad pen: Meaning and Definition of Find definitions for: rail'road pen" Pronunciation: [key] a ruling pen for drawing two parallel lines. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. railroading railroad worm Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language