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Definitions

reef

[reef] / rif /
NOUN
underwater or partially submerged ledge
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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In one dramatic episode, an American ship, the Philadelphia, was grounded on a reef and captured, but in 1804, the Americans launched a successful mission to rescue her with no casualties.

From Salon Jul. 4, 2026

Cleaner fish remove parasites from larger reef fish and receive a meal in return.

From Science Daily Jun. 20, 2026

"Then I was quite sure that my gut feeling was right and that it was a western reef heron in front of me," he said.

From BBC Jun. 9, 2026

Kennedy Shoal is a well-known fishing reef in deep water.

From Barron's May 24, 2026

Selkie humphed onto the reef with her back to Nim.

From "Nim’s Island" by Wendy Orr

Oceanographers at the state-controlled Chinese Academy of Sciences said the platform was a temporary scientific research facility studying the shoal’s coral reefs.

From The Wall Street Journal Jun. 23, 2026

Wildfires, floods, melting ice caps, heat waves, the bleaching of ocean reefs.

From Los Angeles Times Jun. 18, 2026

The environments where octopuses live, including coral reefs and the seafloor, are often highly complex and filled with obstacles.

From Science Daily Jun. 5, 2026

After years of watching China creating land to back its expansive territorial claims Vietnam too is now building up some of the reefs it holds in the South China Sea.

From BBC Jun. 3, 2026

Fish who’d spent their whole lives in those reefs abandoned their homes and swam out to open water.

From "The Wild Robot Protects" by Peter Brown

The firm has only reefed 12 of the 60 Gulf of Mexico platforms it has decommissioned.

From Economist Jun. 12, 2014

Currently, less than a tenth of America’s old oil and gas platforms are reefed.

From Economist Jun. 12, 2014

Divers and many fishermen want more to be reefed; shrimpers complain that reefs prevent them from dragging nets across parts of the ocean floor.

From Economist Jun. 12, 2014

Under reefed capital sail C. & E. I. bad a good chance to operate at a profit.

From Time Magazine Archive

When the winds became too uncertain, the captain ordered the high sail reefed.

From "Ship Breaker" by Paolo Bacigalupi

Part of that action is Patten’s realization that the sailor’s standard storm tactics—including reefing, heaving-to and lying a-hull—will not work in such an intense blow.

From The Wall Street Journal Dec. 8, 2025

Four years ago the Golden State passed a law allowing reefing.

From Economist Jun. 12, 2014

Operators are loth to estimate costs publicly, but the Tulane University Energy Institute reckons that reefing the state’s 27 platforms could save $2 billion.

From Economist Jun. 12, 2014

Farther down the fleet, the crew on Carlo Falcone's 67-year-old Fife-designed yawl Mariella were busy reefing and shaking in tune with the lightning-lit 40-knot squalls, until losing the top of their mizzenmast.

From Time Magazine Archive

Already reefing from the floods, Cahokia never recovered from the earthquake.

From "1491" by Charles C. Mann




Vocabulary lists containing reef


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