/ Dictionary / Index M metal lath: Meaning and Definition of Find definitions for: met'al lath' Pronunciation: [key] any of various meshlike laths of metal for plastering. nondecorative interior metalwork for supporting lighting fixtures, dropped ceilings, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metall- metalli- Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language