See under cankerworm.
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Origin of spring cankerworm
An Americanism dating back to 1885–90
Definition for spring cankerworm (2 of 2)
[ kang-ker-wurm ]
/ ˈkæŋ kərˌwɜrm /
the striped, green caterpillar of any of several geometrid moths: a foliage pest of various fruit and shade trees, as Paleacrita vernata (spring cankerworm) and Alsophila pometaria (fall cankerworm).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for spring cankerworm
/ (ˈkæŋkəˌwɜːm) /
the larva of either of two geometrid moths, Paleacrita vernata or Alsophila pometaria, which feed on and destroy fruit and shade trees in North America
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012