or wooden pin. Tenon in polygonal or circular form utilized to create a false joint, meaning that it is introduced into a space dug out on the border of an object that is to be assembled, and adapt to receive another object in which a groove has been made at the same height. Assembly using chevilles began to be diffused in Europe in the 14th Century for the construction of wooden supports for painting (see carpentry), becoming absolutely common in the course of the 16th Century: the dates of its diffusion are decisively indicative, given that the system is not distinguishable from the equally diffused glued true joint. As the cheville, it is completely hidden from sight.