chestnut borer

noun

Definition of chestnut borer

: an insect that bores in the wood of the chestnut tree specifically : a small blue-black yellow-striped beetle (Agrilus bilineatus) having a flattened larva that bores in various deciduous trees

called also two-lined chestnut borer

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about chestnut borer

Statistics for chestnut borer

Cite this Entry

“Chestnut borer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chestnut%20borer. Accessed 28 Feb. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on chestnut borer

What made you want to look up chestnut borer? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!