TENON

Wooden projection shaped to fit in a mortise joint (5)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 16,498 — 2023-03-23 00:00:40
  20A: End of a piece of wood shaped to form a mortise joint (5)
• Quick crossword No 15,641 — 2020-06-23 23:00:02
  20A: Wooden projection shaped to fit in a mortise joint (5)