noun Date: 1860 a joint made by a tongue on one edge of a board fitting into a corresponding groove on the edge of another board, tongue-and-groove adjective
TONGUE AND GROOVE
Meaning of TONGUE AND GROOVE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012