Definition of webworm
: any of various caterpillars that are more or less gregarious and spin large webs
Recent Examples of webworm from the Web
Moths do not mean sod webworms are feeding; wait until chewing damage is noted to treat.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'webworm'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of webworm
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