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

Other favorites include the prairie habitat of Bobolink Meadow at the eastern edge of Jackson Park lagoon, and the collection of cherry blossom trees ringing the Columbian Basin. —Michael Peregrine, Chicago Tribune, 21 June 2026

Turquoise green lagoon for a kilometer and then the sea of deep blue shade beyond the coral reef. —Lexi Lane, PEOPLE, 21 June 2026

Its shallow lagoon is the best spot for snorkeling. —Lisa Cericola, Southern Living, 20 June 2026

In the original plans, the east and west ends of South Park (now Jackson and Washington parks, respectively) were meant to be connected to Lake Michigan via long canal that would allow boaters to get from the lake to the lagoons in what is now Washington Park. —Adam Harrington, CBS News, 18 June 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