(n)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, Syn.yellow locust, Robinia pseudoacacia
(n)large shrub or small tree of the eastern United States having bristly stems and large clusters of pink flowers, Syn.Robinia hispida, moss locust, rose acacia
‖n. [ NL. So called after Jean Robin, a French herbalist. ] (Bot.) A genus of leguminous trees including the common locust of North America (Robinia Pseudocacia). [ 1913 Webster ]