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

At low tide, the shoreline transforms into a natural pool paradise, with warm, shallow lagoons for lounging. —Jade Moyano, Travel + Leisure, 30 Nov. 2025

Water quality problems have led to a widespread loss of seagrass in the lagoon. —Amy Green, Miami Herald, 27 Nov. 2025

The Port in turn pumps it to one of several lagoons that hold tens or hundreds of millions of gallons of tainted water. —Sean Patrick Cooper, Rolling Stone, 24 Nov. 2025

Four Seasons Resort Bora Bora is absolutely a star of the region, with warm, seamless service, its own private lagoon and nature reserve for snorkeling excursions, and gorgeous grounds full of activities and pockets for relaxation. —Shelby Wax, Vogue, 21 Nov. 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