That has been mortised (in various senses of the verb).

fitted together or compacted by dovetailing.

Joined by means of a scarf. scarfed joint = scarf, n.2 1.

furnished or made with a tenon.

Having or furnished with a tongue or tongues (in various senses); tongued and grooved, furnished with a tongue and groove joint (see tongue, n.…

Of a surface: having an end or edge shaped to an angle of 45 degrees. Also: designating a mitre joint; connected or united by such a joint.

joined by a mitre joint.

Woodworking. Of a piece of board: having the edges shaped (esp. by tongue-and-grooving) to allow a close joint to be made. Also applied to the edges…

secured by a stub mortise.

North American. Woodworking and Joinery. Designating a joint in which the edge of a piece of wood is fixed into a channel or slot cut across the…

(Woodworking), tongued and grooved.