Acacia catechu, commonly known as the catechu tree, is a medium-sized tree native to tropical and subtropical regions of Asia and Africa. It typically grows up to 20 meters tall and features feathery leaves and small yellow flowers. The tree is valued for its durable wood and is often used in construction and furniture making. The heartwood of Acacia catechu contains a substance called catechu, which is extracted for various uses, including traditional medicine and as a dye. This extract has astringent properties and is used in products like chewing tobacco and herbal remedies.