horse chestnut


Definition of horse chestnut

1 : a large tree (Aesculus hippocastanum of the family Hippocastanaceae, the horse-chestnut family) of southeastern Europe that has palmate leaves and erect conical clusters of showy flowers and is widely cultivated as an ornamental and shade tree and naturalized as an escape also : buckeye
2 : the large glossy brown seed of a horse chestnut

Examples of horse chestnut in a Sentence

Recent Examples on the Web Take care not to eat horse chestnuts, which are poisonous, Penhallegon said. oregonlive, "How to harvest hazelnuts, walnuts and chestnuts and store them for the winter," 15 Oct. 2019 The conservancy highlighted Aesculus hippocastanum, or the horse chestnut tree, native to southeastern Europe. San Diego Union-Tribune, "Report: 58% of Europe-only trees face extinction threat," 27 Sep. 2019

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

First Known Use of horse chestnut

1597, in the meaning defined at sense 1

Keep scrolling for more

Learn More about horse chestnut

Time Traveler for horse chestnut

Time Traveler

The first known use of horse chestnut was in 1597

See more words from the same year

Statistics for horse chestnut

Cite this Entry

“Horse chestnut.” Dictionary, Merriam-Webster, Accessed 5 Jul. 2020.

Keep scrolling for more

More Definitions for horse chestnut

horse chestnut


English Language Learners Definition of horse chestnut

: a tree with flowers that grow in large bunches and large brown seeds also : the seed of a horse chestnut tree

horse chestnut


Kids Definition of horse chestnut

: a shiny large brown nut that is unfit to eat and is the fruit of a tall tree native to Europe

Keep scrolling for more

More from Merriam-Webster on horse chestnut

Spanish Central: Translation of horse chestnut

Nglish: Translation of horse chestnut for Spanish Speakers Encyclopedia article about horse chestnut

Comments on horse chestnut

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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