TENON is validvalid

to unite by means of a projection on the end of a piece of wood [v TENONED, TENONING, TENONS] : TENONER [n]

13,645 of 196,601 in NWL2023·also valid in CSW24

a projecting part of a joint for inserting into mortise [n -S] / to fix or fit with a tenon [v -ED, -ING, -S]