IPA: /ˈliːfˌwɜːrm/
KK: /ˈlifˌwɜrm/
A type of caterpillar that feeds on the leaves of plants.
The leafworm damaged the garden by eating all the leaves.
Leafworm → The word is formed from "leaf" (from Old English "leáf", meaning the foliage of a plant) and "worm" (from Old English "wyrm", meaning a serpent or a crawling creature). A leafworm refers to a type of caterpillar that feeds on the leaves of plants.
Think of 'leaf' as the part of the plant that the 'worm' (or caterpillar) eats — that's why a leafworm is a creature that feeds on leaves.