A North American deciduous tree (Gleditsia triacanthos) having fragrant flowers, hard red wood, and conspicuous thorns.

A kind of beetle, Megacyllene robiniae, that feeds as a larva on black locust trees in eastern North America.

plural of black locust

A tree, Robinia pseudoacacia, in the subfamily Faboideae of the pea family Fabaceae, native to the southeastern United States, but widely planted and naturalized elsewhere in temperate North America, Europe and Asia; considered an invasive species in some areas.

(rare) black locust

plural of yellow locust

plural of honey locust

Gleditsia aquatica, a tree found in swamps.

plural of water locust

plural of locust borer