lagoon

noun

la·​goon lə-ˈgün 

1

: a shallow sound, channel, or pond near or communicating with a larger body of water

2

: a shallow artificial pool or pond (as for the processing of sewage or storage of a liquid)

lagoonal

lə-ˈgü-nᵊl 

adjective

Examples of lagoon in a Sentence

Recent Examples on the Web

The alligator that became a sensation in Chicago after turning up in a Humboldt Park lagoon last month is healthy and enjoying the good life in sunny Florida, keepers at his new home said. — Kori Rumore, Chicago Tribune, 9 July 2026

Cliff divers jump and twirl into a blue lagoon, puppeteers put on tableside shows and magicians make the rounds. — Vanessa Yurkevich, CNN Money, 5 July 2026

Lastly, the city also serves as a gateway to Ria Formosa Natural Park, a sprawling network of coastal lagoons, barrier islands, and sandy beaches that showcases some of the country's most spectacular scenery. — Lauren Dana Ellman, Travel + Leisure, 4 July 2026

The subs never actually submerged—passengers simply sat below the lagoon’s waterline—but the ride embodied a growing appetite for underwater tourism. — Bill Gourgey, Popular Science, 2 July 2026

Word History

Etymology

French & Italian; French lagune, from Italian laguna, from Latin lacuna pit, pool, from lacus lake

First Known Use

1673, in the meaning defined at sense 1

Rhymes for lagoon

• attune
• baboon
• balloon
• bassoon
• buffoon
• cartoon
• cocoon
• festoon
• gaboon
• harpoon
• immune
• impugn

Kids Definition

lagoon

noun

la·​goon lə-ˈgün 

: a shallow channel or pond near or connected with a larger body of water