#tenon  a projection at the end of a piece of wood that is shaped to fit into a mortise and form a mortise joint
  supertype:  #projection  any structure that branches out from a central support
  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

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