armyworm

noun ar·my·worm \ ˈär-mē-ˌwərm \

Definition of armyworm

:any of numerous moths whose larvae travel in multitudes from field to field destroying grass, grain, and other crops; especially :the common armyworm (Pseudaletia unipuncta) of the eastern and central U.S. and Canada

Recent Examples of armyworm from the Web

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First Known Use of armyworm

1815


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