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black locust, yellow locust, Robinia pseudoacacia | large thorny tree of eastern and central United States having pinnately compound leaves and drooping racemes of white flowers; 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 ❲Robinia pseudoacacia❳ | |
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black locust | strong stiff wood of a black-locust tree; very resistant to decay |