IPA: /ˈwɛbˌwɜːrm/
KK: /wɛbˌwɜrm/
A type of caterpillar that creates webs and often causes damage to plants.
The garden was infested with webworms, which spun webs all over the leaves.
The word 'webworm' is formed from 'web' (from Old English 'webb', meaning a woven fabric or network) and 'worm' (from Old English 'wyrm', meaning serpent or dragon). The term 'webworm' refers to a type of caterpillar that creates webs in which it lives and feeds, resembling a woven structure.
Think of a 'woven fabric' ('web') and a 'serpent' or 'dragon' ('worm') — together, they describe a creature that lives in a web-like structure.