Projecting end of a piece of wood that is formed to fit into a mortise in another piece (5)

I believe the answer is:

tenon

(Other definitions for tenon that I've seen before include "Type of small saw" , "Nonet (anag.)" , "Tongue of wood for joint" , "End of a piece of wood shaped to form a mortise joint" , "One projecting" .)

I've seen this clue in The Mirror.

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