Definitions for "Dado Joint"
Keywords:  groove, rectangular, across, plank, fit
a rectangular groove, typically across the grain of a wood member, into which the end of the joining member is inserted
Joint which is made by cutting a groove or dado into one piece of wood to allow another piece of wood to fit into it. This very strong joint is normally used in cabinet making. There is a straight dado joint which has a groove cut from edge to edge of the piece of wood. In the other type, the wood stops short of the edge so that the joint is not visible from the face of the piece.
A groove cut across the grain of the face of a member to receive the edge or end thickness of another member.