The “mortise” is the recess where the tenon goes. It can be cut by hand with a mallet and mortising chisel, or mechanically ...

[Matthais]’ jig-building skills are beyond reproach, so whipping up a prototype for this toy was pretty easy for him ... so a small mortise and tenon – looking very much like a piece of ...

One common joinery method used in wood working is the mortise and tenon. A mortise is basically a hole in a piece of wood and the tenon is another piece of wood cut to tightly fit in that hole.