chestnut borer


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

Dictionary Entries Near chestnut borer

chestnut blight

chestnut borer

chestnut-breasted finch

See More Nearby Entries 

Statistics for chestnut borer

Cite this Entry

“Chestnut borer.” Dictionary, Merriam-Webster, Accessed 28 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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