Definitions for bagwormˈbægˌwɜrm
Random House Webster's College Dictionary
any moth of the family Psychidae in its caterpillar phase, in which it wraps itself in a bag of silk, leaves, etc.
Origin of bagworm:
A member of the family Psychidae of the Lepidoptera.
eastern tent caterpillar.
one of several lepidopterous insects which construct, in the larval state, a baglike case which they carry about for protection. One species (Platoeceticus Gloveri) feeds on the orange tree. See Basket worm