1A ridge of jagged rock, coral, or sand just above or below the surface of the sea.
- Below are beautiful coral reefs, turtles, sharks and a clean ocean floor.
- To illustrate the point, Knowlton offers the example of coral reefs, which she describes as the most diverse ecosystems in the world.
- Mostly we dived shallow coral reefs in the order of 12m deep and less.
1.1A vein of ore in the earth, especially one containing gold.
- Apparently, three of the Struben brothers' workers were among those who struck gold in the main reef.
- The city's population grew during that decade from 70,000 to over 500,000, as fortunes were won and lost on the nearby gold reefs.
- The story of gold is told in a bus tour taking in the site where Harrison identified the gold reef in Langlaagte.
verb[with object] Back to top
1Take in one or more reefs of (a sail): reef the mainsail in strong winds
More example sentences
- Early on, the wind filled to 18 knots and the yachts were forced to reef their mainsails and change headsails under difficult conditions.
- Captain Valentine ordered his men to reef the sails and lower the anchors, while he once again reminded Jose and the young boy about their jobs.
- Tahr perched herself precariously on the window ledge watching the evening activity along the wharves: fishing boats being tied, cargo being unloaded, sails being reefed and mended.