We don't have synonyms for tenoning yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are tending, tinning and tenting.
(n) :
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.
(n) :
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.