any of several pyralid moths, as Pyrausta (ostrinia) nubilalis (European corn borer), the larvae of which bore into the stem and crown of corn and other plants.
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Origin of corn borer
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for corn borer
the larva of the pyralid moth Pyrausta nubilalis, native to S and Central Europe: in E North America a serious pest of maize
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