Definitions for "TONGUE AND GROOVE"
A type of wooden siding with the edge of one board fitting into the groove of the next.
A joint in which the protruding ridge, or tongue, of one piece fits into a matching groove in the other piece.
Tongue and groove refers to a profile whereby a protruding “tongue” along one edge and/or end fits a matching groove in the adjacent piece.
Construction technique of assembling two wood elements, one having a protrusion, the other having a recess.