An acacia tree native to North Africa and parts of Asia, Acacia nilotica, which is used as a source of gum arabic and of timber; also called babul. Also: the wood of this tree. Frequently attributive, especially in "sunt tree".
Early 19th century. From Arabic sanṭ (also ṣanṭ), collective noun from Coptic šonte, šanti, etc. from ancient Egyptian šnḏt, šntt thorn tree.