Definition of locust noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈləʊkəst//
; NAmE NAmE//ˈloʊkəst//
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a large insect that lives in hot countries and flies in large groups, destroying all the plants and crops of an area a swarm of locusts The locusts have destroyed a lot of the crops. See related entries: Invertebrates Word OriginMiddle English: via Old French locuste from Latin locusta ‘locust, crustacean’.
See the Oxford Advanced American Dictionary entry: locust