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noun bor·er \ˈbȯr-ər\

Simple Definition of borer

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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of borer

  1. 1 :  a tool used for boring

  2. 2 a :  shipworm b :  an insect that bores in the woody parts of plants

14th Century

First Known Use of borer

14th century

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