spruce budworm
[buhd-wurm]
noun
the larva of a common tortricid moth, Choristoneura fumiferana, that is a destructive pest primarily of spruce and balsam fir in the northern and northeastern U.S. and in Canada.
Origin of spruce budworm
First recorded in 1880–85
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019