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

A seed of the carob tree.

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.

plural of water locust

Gleditsia aquatica, a tree found in swamps.

plural of yellow locust

(rare) black locust

plural of honey locust

plural of locust tree