webworm Syllabification: (web·worm)Pronunciation: /ˈwebˌwərm/Definition of webworm noun North American a caterpillar that spins a web in which to rest or feed. When present in large numbers, it can become a serious pest. Loxostega and other genera, family Pyralidae webworm in other Oxford dictionaries Definition of webworm in the British & World English dictionary
