Breadcrumb Home > Dictionary > Index S slip joint: Meaning and Definition of Find definitions for: slip' joint" Pronunciation: [key] a joint made between an older and a newer masonry wall to form a continuous surface, masonry at the end of the newer wall fitting into a vertical groove cut in the end of the older wall. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slip indicator slip-joint pliers ✖ Related Content Daily Word Quiz: musth Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language