locusts is a form of:

Locust



noun
1.
(a kind of grasshopper that migrates in swarms and eats all the vegetation of a district, a tree with fernlike leaves and clusters of fragrant place blossoms) កណ្ដូប
ENGLISH MEANING
noun
1.
Any one of numerous species of long-winged, migratory, orthopterous insects, of the family Acrididae, allied to the grasshoppers; esp., (Edipoda, Pachytylus, migratoria, and Acridium perigrinum, of Southern Europe, Asia, and Africa. In the United States the related species with similar habits are usually called grasshoppers.
2.
The locust tree.