| 1. | Also called false acacia, yellow locust. a North American tree, Robinia pseudoacacia, of the legume family, having pinnate leaves and clusters of fragrant white flowers. |
| 2. | honey locust. |
| a thorny North American tree, Gleditsia triacanthos, of the legume family, having small, compound leaves and pods with a sweet pulp. |
| black locust n. A deciduous tree (Robinia pseudoacacia) in the pea family, native to the eastern and central United States and having alternate, pinnately compound leaves, spiny stipules, and hanging clusters of fragrant, creamy-white flowers. |