four-by-two

four-by-two

n
(Building) Austral and NZ a piece of timber with a cross section that measures 4 inches by 2 inches
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014