Other forms: lagoons
A lagoon is a calm shallow pool of seawater sheltered behind sand or coral. A blue lagoon, swim in the lagoon, the lagoon at low tide.
The shelter is what makes it: a reef or a sandbar takes the force of the waves, so the water inside is warm, calm and full of life. Atolls are rings of coral around one. In sewage treatment a lagoon is a settling pond, which is a much less lovely thing.
1nounlagoonA calm shallow pool of seawater behind a reef or bar.
“The children swam in the warm lagoon while the big waves broke further out.”
lagoon is a body of water.
French lagune comes from Italian laguna, from Latin lacuna, a pool or gap, from lacus, a lake.
Latin
lacūna
Italian
laguna
French
lagune
English, today
lagoon
Borrowed from French lagune, from Italian laguna, from Latin lacūna. Related to Old English lagu via Proto-Indo-European. a doublet of lacuna and lacune.
Etymology from Wiktionary, CC BY-SA