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

Her beau and companion was asleep on his board in the middle of the lagoon. —Neal Rubin, Freep.com, 1 Oct. 2025

The project includes the removal of the weir to restore tidal saltwater flushing to the 220-acre lagoon, along with native plants and wildlife. —Phil Diehl, San Diego Union-Tribune, 29 Sep. 2025

Once a tropical lagoon with poor water circulation, the Monte San Giorgio area developed a unique environment that encouraged fossil preservation. —Mrigakshi Dixit, Interesting Engineering, 29 Sep. 2025

Fairmont Mayakoba Playa del Carmen, Mexico Immersed within a mangrove jungle intersected by lagoons, Fairmont Mayakoba has all the makings of a tropical oasis. —Allison Tibaldi, USA Today, 27 Sep. 2025

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