Definition of corn earworm
: a noctuid moth (Helicoverpa zea synonym Heliothis zea) whose large striped yellow-headed larva is especially destructive to corn, tomatoes, tobacco, and cotton bolls
From the M-W Editors
First Known Use of corn earworm
1802
Learn More about corn earworm
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Britannica.com: Encyclopedia article about corn earworm
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