(Bot.) A large tree of the genus Swietenia (Swietenia Mahogoni), found in tropical America. Note: Several other trees, with wood more or less like mahogany, are called by this name; as, African mahogany (Khaya Senegalensis), Australian mahogany (Eucalyptus marginatus), Bastard mahogany (Batonia apetala of the West Indies), Indian mahogany (Cedrela Toona of Bengal, and trees of the genera Soymida and Chukrassia), Madeira mahogany (Persea Indica), Mountain mahogany, the black or cherry birch (Betula lenta), also the several species of Cercocarpus of California and the Rocky Mountains.