Locust tree

Locust tree can mean:

Any of a number of tree species in the genera Gleditsia or Robinia
Honey locust, a leguminous tree with pods having a sweet, edible pulp
Black locust, a leguminous tree with toxic pods but useful for making honey
Or less commonly, "African locust bean tree" (Parkia biglobosa), which is also known as néré
The carob tree, Ceratonia siliqua.

Etymology

In North America and Greece the term "locust" (gr. akris) was applied to the pods of the carob tree, that somehow resemble the insect. By extension many other pod carrying trees have been called "locust tree". ^[1]

References

^ Online Etymology Dictionary - locust tree

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