armyworm

noun

ar·​my·​worm ˈär-mē-ˌwərm How to pronounce armyworm (audio)
: any of numerous moths whose larvae travel in multitudes from field to field destroying grass, grain, and other crops
especially : the common armyworm (Mythimna unipuncta) of the eastern and central U.S. and Canada

Examples of armyworm in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Meanwhile, researchers want to expand the use of RNA pesticides to lepidopterans, which include major moth pests such as corn borers and the fall armyworm. Byerik Stokstad, science.org, 27 June 2024 The company is currently testing its effectiveness on the fall armyworm and two other pests. Byerik Stokstad, science.org, 27 June 2024 No one wants to lose their watermelons to pests like aphids, armyworms, or cucumber beetles, so keep your eyes peeled for these pesky insects. Lauren Landers, Better Homes & Gardens, 8 July 2024 Basil is also known to deter aphids, spider mites, and whiteflies and reduce egg-laying by armyworms. Kim Toscano, Southern Living, 28 June 2024 See all Example Sentences for armyworm 

Word History

First Known Use

1815, in the meaning defined above

Time Traveler
The first known use of armyworm was in 1815

Dictionary Entries Near armyworm

Cite this Entry

“Armyworm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/armyworm. Accessed 5 Nov. 2024.

Kids Definition

armyworm

noun
ar·​my·​worm -ˌwərm How to pronounce armyworm (audio)
: any of numerous moths that in the larval stage travel in large numbers from field to field destroying crops (as grass or grain)

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