Construction timber is a type of wood used in the construction of buildings and other structures. The term 'construction timber' can refer to a variety of different types of wood, including beams, joists, and studs. In this crossword, the solution for the term 'construction timber' is BEAM, which is a type of structural support made from wood that is used to support the weight of a structure. Beams are typically made from strong, durable woods such as oak, pine, or cedar.