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
Two people absconded with 85 decorative koi from a pond outside a restaurant, California authorities reported.
—
Don Sweeney, Sacbee.com, 26 June 2025
The koi — each one shaped like a torpedo, at least 18 inches long and weighing around 3.5 pounds — proved trickily slippery.
—Rukmini Callimachi, New York Times, 20 Jan. 2025
Key Takeaways Most backyard ponds require weekly maintenance, especially those housing koi fish, to maintain ecological balance.
—Kelly Roberson, Better Homes & Gardens, 8 June 2025
Keep koi fish and welcome wildlife to your pond to lend a sense of tranquility and movement to your space.
—Miranda Crowell, Better Homes & Gardens, 29 May 2025
See All Example Sentences for koi
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Don Sweeney, Sacbee.com, 26 June 2025
The koi — each one shaped like a torpedo, at least 18 inches long and weighing around 3.5 pounds — proved trickily slippery.
—Rukmini Callimachi, New York Times, 20 Jan. 2025
Key Takeaways Most backyard ponds require weekly maintenance, especially those housing koi fish, to maintain ecological balance.
—Kelly Roberson, Better Homes & Gardens, 8 June 2025
Keep koi fish and welcome wildlife to your pond to lend a sense of tranquility and movement to your space.
—Miranda Crowell, Better Homes & Gardens, 29 May 2025
See All Example Sentences for koi
Cite this Entry
“Koi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/koi. Accessed 4 Jul. 2025.
Copy CitationKids Definition
koi
noun
: a carp that has been bred to be of various bright colors and is often stocked in ornamental ponds
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