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 calm waters of the coastal lagoons are perfect habitat for green sea turtles, and July through September is the best time to spot them . — Ut Community Press, San Diego Union-Tribune, 25 Aug. 2026

The atmosphere is low-key but looks-wise the island is a showstopper – it’s surrounded by a beautiful aquamarine lagoon with stunning beaches and vibrant marine life. — Ann Lee, TheWeek, 24 Aug. 2026

Thompson, a member of the citizens’ oversight committee for the lagoon tax, worries the FAA’s proposal would undo much of the progress the tax has made so far. — Molly Duerig, Miami Herald, 24 Aug. 2026

The Ria Formosa Natural Park is close by and offers plenty of opportunities for birdwatching and trails to walk around its lagoons. — Condé Nast, Condé Nast Traveler, 21 Aug. 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