Breadcrumb Home > Dictionary > Index P plate rail: Meaning and Definition of Find definitions for: plate' rail" Pronunciation: [key] a rail or narrow shelf fixed along a wall to hold plates, esp. for ornament or display. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plater plate resistance ✖ Related Content Daily Word Quiz: ultimathule Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language