Meaning of cankerworm

can•ker•worm

Pronunciation: (kang'kur-wûrm"), [key]
— n.
  1. the striped, green caterpillar of any of several geometrid moths: a foliage pest of various fruit and shade trees, as Paleacrita vernataand Alsophila pometariaSee illus. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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