from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several moths of the family Psychidae, which construct fibrous cases of silk spun together with leaves, twigs, or grass. The plant-feeding larvae and wingless adult females live in these cases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A member of the family Psychidae of the Lepidoptera.
- n. Eastern tent caterpillar.
- n. Fall webworm.
from the GNU version of the Collaborative International Dictionary of English
- n. One of several lepidopterous insects which construct, in the larval state, a baglike case which they carry about for protection. One species (Platœceticus Gloveri) feeds on the orange tree. See basket worm.
from The Century Dictionary and Cyclopedia
- n. The larva of a lepidopterous insect, Thyridopteryx ephemeræ-formis (Harris), common throughout the more northern part of the United States.
bag + worm. (Wiktionary)