[{"Bold_text": "adjective", "List Items": ["two units thick and four units wide, especially in .", "Informal.lacking adequate space; cramped:a small, two-by-four room.", "Informal.unimportant; insignificant:Theirs was a petty, two-by-four operation."]}, {"Bold_text": "noun", "List Items": ["a timber measuring 2 × 4 inches (5 × 10 centimeters) in cross section, when untrimmed: equivalent to 1 5/8 × 3 5/8 inches (4.5 × 9 centimeters) when trimmed."]}]