/ Dictionary / Index W wall plate: Meaning and Definition of Find definitions for: wall' plate" Pronunciation: [key] Also calleda horizontal member built into or laid along the top of a wall to support and distribute the pressure from joists, rafters, etc. a vertical metal plate secured against a wall, as to attach a bracket. one of the longer members of a set. Cf. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wallpaper wall plug 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