/ Dictionary / Index T tongue-and-groove joint: Meaning and Definition of Find definitions for: tongue'-and-groove' joint" Pronunciation: (tung'un-grv'), [key] — Carpentry. Carpentry. a joint between two boards in which a raised area on the edge of one board fits into a corresponding groove in the edge of the other to produce a flush surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tongue tongue cover Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language