bor·​er | \ ˈbȯr-ər How to pronounce borer (audio) \

Definition of borer

1 : a tool used for boring
2a : shipworm
b : an insect that bores in the woody parts of plants

Examples of borer in a Sentence

Recent Examples on the Web

Bt and spinosad are effective controls if applied early, before the borers tunnel into the stalks. The Editors Of Organic Life, Good Housekeeping, "How To Grow Corn," 5 Apr. 2016 The polyphagous shot hole borer is thought to have made its way to Johannesburg from Southeast Asia on packing crates or through the trade in plant materials. Neil Shaw, Fox News, "One of world's top urban forests threatened by tiny beetle," 16 Aug. 2018 These types actually combat a variety of pest species, including weevils, clearwing borers, cutworms, sod webworms, chinch bugs, and white grubs. The Editors, Good Housekeeping, "What Are Nematodes? These Tiny Parasites Can Help — Or Hurt — Your Garden," 1 July 2018 But baseball’s recent abandonment of the wood had little to do with the borer infestation. Frank Fitzpatrick,, "Ashes of an industry: A Pennsylvania tradition is dying, one baseball bat at a time," 14 June 2018 And if any of those new plants happens to be an oak or Chinese pistachio, wrap its trunk with paper tree wrap to protect the thin bark from sunscald and invasion by borers. Neil Sperry, star-telegram, "Here’s your gardening to-do list for the second part of the summer," 11 July 2018 On his final venture into the mountains, Ötzi carried a small, well-worn (but well-maintained) kit of stone tools: a dagger, an end-scraper for working hides and wood, a borer, a sharp stone flake used for cutting plants, and a pair of arrowheads. Kiona N. Smith, Ars Technica, "Ötzi the Iceman spent his last days trying to repair his tools," 22 June 2018 Not long afterward, the first ash-borers appeared in the Michigan woods. Frank Fitzpatrick,, "Ashes of an industry: A Pennsylvania tradition is dying, one baseball bat at a time," 14 June 2018 There are some areas of the Northeast the borer hasn’t yet reached, like Vermont and Maine. Frank Fitzpatrick,, "Ashes of an industry: A Pennsylvania tradition is dying, one baseball bat at a time," 14 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'borer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of borer

14th century, in the meaning defined at sense 1

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bore meal





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The first known use of borer was in the 14th century

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English Language Learners Definition of borer

: an insect that digs holes in the woody parts of plants

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to boil down or concentrate

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