Definify.com
Webster 1913 Edition
Webworm
Web′wormˊ
,Noun.
(Zool.)
Any one of various species of moths whose gregarious larvae eat the leaves of trees, and construct a large web to which they retreat when not feeding.
☞ The most destructive webworms belong to the family
Bombycidae
, as the fall webworm (Hyphantria textor
), which feeds on various fruit and forest trees, and the common tent caterpillar, which feeds on various fruit trees (see Tent caterpillar
, under Tent
.) The grapevine webworm is the larva of a geometrid moth (see Vine inchworm
, under Vine
).