ten·on /ˈtɛnən/
 榫,凸榫(vt.)接榫,造榫
 Ten·on n.  Carp. & Join. A projecting member left by cutting away the wood around it, and made to insert into a mortise, and in this way secure together the parts of a frame; especially, such a member when it passes entirely through the thickness of the piece in which the mortise is cut, and shows on the other side.  Cf. Tooth, Tusk.
 Tenon saw, a saw with a thin blade, usually stiffened by a brass or steel back, for cutting tenons. [Corruptly written tenant saw.] --Gwilt.
 Ten·on, v. t. To cut or fit for insertion into a mortise, as the end of a piece of timber.
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 tenon
      n : a projection at the end of a piece of wood that is shaped to
          fit into a mortise and form a mortise joint