: an insect that bores in the woody parts of plants
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Cut branches with hollow tips past stem borer damage.—Benjamin Whitacre, Better Homes & Gardens, 24 Dec. 2025 Hire a certified arborist to remove weak or dead branches, check for borer infestations, structural integrity and so on.—Nan Sterman, San Diego Union-Tribune, 6 Dec. 2025 Emerald ash borer was first discovered in Minnesota in 2009.—Cole Premo, CBS News, 3 Dec. 2025 First detected in the U.S. in 2002, the ash borer has killed hundreds of millions of trees, more than 50 million in the Midwest alone.—Caitlin Looby, jsonline.com, 29 Oct. 2025 See All Example Sentences for borer