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
Test Your Vocabulary
February 2021 Words of the Day Quiz
-
- Which is a synonym of perdure?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share chestnut borer