plural koi
: a carp (Cyprinus carpio) bred especially in Japan for large size and a variety of colors and often stocked in ornamental ponds

Examples of koi in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The nation’s top koi aficionados will bring their most spectacular fish — up to 3 feet long — to South San Jose to compete this weekend, April 5-6, in the ZNA NorCal National Koi Show. Linda Zavoral, Mercury News, 4 Apr. 2025 Let yourself be carried away by the flowers, the butterflies, the parakeets, the huge koi in the pond with a waterfall, and even the horses, because Patch of Heaven Sanctuary has a magnificent stable. Sarah Moreno, Miami Herald, 20 Mar. 2025 Once an important feudal stronghold deep in the Japanese Alps, Matsumoto is known today for its towering castle; arguably the most stunning fortification in the entire country with its black-onyx trim and turquoise moat filled with curious koi. Brandon Presser, Vogue, 6 Mar. 2025 One Altadena couple found help from a local expert to save their pets of 25 years: five koi fish. German Lopez, New York Times, 21 Jan. 2025 See All Example Sentences for koi

Word History

Etymology

Japanese

First Known Use

1727, in the meaning defined above

Time Traveler
The first known use of koi was in 1727

Browse Nearby Words

Cite this Entry

“Koi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/koi. Accessed 23 Apr. 2025.

Kids Definition

koi

noun
: a carp that has been bred to be of various bright colors and is often stocked in ornamental ponds

More from Merriam-Webster on koi

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