Mortise and Tenon Joint
A mortise and tenon joint is a type of joint in the art of Joinery. These joints are commonly used in forming framework, the tenon (projecting piece) fitting tightly into the the mortise (hole), and then glued in place.
GalleriesCarpentry and Woodworking
John H. Finley ed. Nelson's Perpetual Loose-Leaf Encyclopaedia (vol. 7) (New York, NY: Thomas Nelson and Sons, 1917) 13