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A board cut with a tongue on one side and a matching groove on the other to fit with similarly cut boards.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Building) a long thin board with a tongue along one edge and a corresponding groove along the other, used with similar boards to line walls, ceilings, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a board having a tongue on one edge that fits a groove in the other.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||matchboard - a board that has a groove cut into one edge and a tongue cut into the other so they fit tightly together (as in a floor)|
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