Wood is hard, fibrous, lignified structural tissue produced as secondary xylem in the stems of woody plants, notably trees but also shrubs. In a living tree it conducts water and nutrients to the leaves and other growing tissues, and has a support function, enabling plants to reach large sizes. Wood may also refer to other plant materials and tissues with comparable properties.
People have used wood for millennia for many purposes, primarily as a construction material, for making tools, weapons, furniture and artworks and as a fuel. Wood can be dated to make inferences about when a wooden object was created and the climate at that time.
