This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A shallow body of water, especially one separated from a sea by sandbars or coral reefs.

n. A shallow body of liquid waste material, as one in a dump.

n. A shallow body of water separated from deeper sea by a bar.

n. A shallow sound, channel, pond, or lake, especially one into which the sea flows.

n. A lake in a coral island, often occupying a large portion of its area, and usually communicating with the sea. See Atoll.

n. An area of shallow water, or even of marshy land, bordering on the sea, and usually separated from the region of deeper water outside by a belt of sand or of sand-dunes, more or less changeable in position.

n. With reference to Tuscany and some other parts of Italy, the basin of a hot spring, especially one from which borax is obtained: from the Italian use of lagone in this sense.

n. In occasional use, the area of still water inclosed within an atoll, which is often called a lagoon island. See atoll.

n. a body of water cut off from a larger body by a reef of sand or coral

"I agree with you, though a lagoon is no millpond for riding it out."

lake   

atoll   

liman   

channel    pond    bayou    lake   

Bethune    Boone    Calhoun    June    Karun    Kuhn    Moon    Noone    Rangoon    Sassoon   

creek    estuary    pond    marsh    inlet    lake    harbor    waterway    cove    canal