Wiktionary
tongue-and-groove
a. Employing tongue and groove joints
Usage examples of "tongue-and-groove".
She gave the landscape a moment's consideration, then turned her attention to the porch on which she stood-to its eaves and railings, its fitted ceiling boards, and its worn, tongue-and-groove wooden flooring.
It was pointing towards a long wall, the bottom half of which had been lined with wooden tongue-and-groove painted the selfsame institutional cream as the plaster walls.