mortise joint

definition: a joint made by inserting tenon on one piece into mortise holes in the other
example:
speech part: noun
synonyms: mortise-and-tenon joint
definition: a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus
example:
speech part: noun
synonyms: ankle ankle joint articulatio talocruralis

How mortise joint is being used?