spruce budworm

noun

Definition of spruce budworm

: a tortricid moth (Choristoneura fumiferana) whose larva feeds on evergreen trees (such as spruce and balsam fir) in the northern U.S. and Canada; also : a related moth (C. occidentalis) of the northwestern U.S. and adjacent Canada

First Known Use of spruce budworm

1884

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