tongue-and-groove joint

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tongue-and-groove joint

n
1. (Building) a joint made between two boards by means of a tongue along the edge of one board that fits into a groove along the edge of the other board
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tongue′-and-groove′ joint`


n.
a joint between two boards in which a raised area on the edge of one board fits into a corresponding groove in the edge of the other.
[1875–80]
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