| Noun | 1. | locust tree - any of various hard-wooded trees of the family Leguminosaecourbaril, Hymenaea courbaril - West Indian locust tree having pinnate leaves and panicles of large white or purplish flowers; yields very hard tough wood locust - hardwood from any of various locust trees Gleditsia triacanthos, honey locust - tall usually spiny North American tree having small greenish-white flowers in drooping racemes followed by long twisting seed pods; yields very hard durable reddish-brown wood; introduced to temperate Old World Robinia pseudoacacia, yellow locust, black locust - large thorny tree of eastern and central United States having pinnately compound leaves and drooping racemes of white flowers; widely naturalized in many varieties in temperate regions clammy locust, Robinia viscosa - small rough-barked locust of southeastern United States having racemes of pink flowers and glutinous branches and seeds tree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms | |