anklebone, astragal, astragalus, talus - the bone in the ankle that articulates with the leg bones to form the ankle joint

leg - a human limb; commonly used to refer to a whole limb but technically only the part between the knee and ankle

articulatio plana, gliding joint - a freely moving joint in which the articulations allow only gliding motions

dovetail, dovetail joint - a mortise joint formed by interlocking tenons and mortises

joint - junction by which parts or objects are joined together

mortice, mortise - a square hole made to receive a tenon and so to form a joint

tenon - a projection at the end of a piece of wood that is shaped to fit into a mortise and form a mortise joint

tongue and groove joint - a mortise joint made by fitting a projection on the edge of one board into a matching groove on another board