ˈ ̷ ̷| ̷ ̷ ̷ ̷- noun
: the bright green brownish headed (black when young) larva of a small variably marked grayish moth ( Acleris variana ) that is a serious pest of hemlock, spruce, and fir throughout much of the northern United States and Canada feeding on the new foliage and webbing it into mats