1. (US) Pine or fir lumber cut to a specified size, usually at least 3 in. (76 mm) thick and 9 in. (229 mm) wide.
2. (Brit.) Square-sawn softwoodlumber, 17 €8 in. (47.6 mm) to 4 in. (101.6 mm)
thick and 9 in. (228.6 mm) to under 11 in. (279.4 mm) wide.