Meaning

noun migratory grasshoppers of warm regions having short antennae

noun hardwood from any of various locust trees

noun any of various hardwood trees of the family Leguminosae

originEtymology tree Proto-Indo-European *lek-der.? Latin locusta Anglo-Norman locustebor. Middle English locuste English locust Inherited from Middle English locuste, locust, from Anglo-Norman locuste, Middle French locuste, and their source, Latin locustam (“locust, crustacean, lobster”, accusative of locusta). Doublet of langouste. Noun sense 3 (“kind of tree”), originally referring to the carob…

Etymology from Wiktionary, CC BY-SA 3.0