- Any hairy caterpillar which appears in great numbers,
devouring herbage, and wandering about like a palmer. The name is
applied also to other voracious insects. - In America, the larva of any one of several moths,
which destroys the foliage of fruit and forest trees, esp. the larva of
Ypsolophus pometellus, which sometimes appears in vast numbers.
Definition
[ n.]