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Any of several moths of the family Psychidae, the larvae and females of which inhabit fibrous cases constructed of silk with bits of leaves and other debris, especially Thyridopteryx ephemeraeformis, a pest of deciduous and evergreen trees.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Animals) the larva of moths of the family Psychidae, which forms a protective case of silk covered with grass, leaves, etc
2. (Animals) bagworm moth any moth of the family Psychidae
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any moth of the family Psychidae in its caterpillar phase, in which it wraps itself in a bag of silk, leaves, etc.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.