#mortise__mortice  a square hole made to receive a tenon and so to form a joint
  supertype:  #hole  an opening deliberately made in or through something
  part of:  #mortise_joint__mortisejoint__mortise-and-tenon_joint__mortiseandtenonjoint  a joint made by inserting tenon on one piece into mortise holes in the other

No statement uses or specializes #mortise; click here to add one.