/ Dictionary / Index C compromise rail: Meaning and Definition of Find definitions for: com'promise rail" Pronunciation: [key] — Railroads. Railroads. a rail for linking rails having different sections. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. compromise joint compsognathus Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language