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- Dictionaryreef/riːf/
noun
- 1. each of the several strips across a sail which can be taken in or rolled up to reduce the area exposed to the wind.
verb
- 1. take in one or more reefs of (a sail): "reef the mainsail in strong winds"
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REEF definition: 1. a line of rocks or sand just above or just below the surface of the sea, often dangerous to…. Learn more.
A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. [ 1 ] . Many reefs result from natural, abiotic (non-living) processes such as deposition of sand or wave erosion planing down rock outcrops.
Oct 19, 2023 · A reef is a ridge of material at or near the surface of the ocean. Reefs can occur naturally. Natural reefs are made of rocks or the skeletons of small animals called corals. Reefs can also be artificial—created by human beings. Artificial Reefs People create reefs for three chief reasons.
noun. a ridge of rock, sand, coral, etc, the top of which lies close to the surface of the sea. a ridge- or mound-like structure built by sedentary calcareous organisms (esp corals) and consisting mainly of their remains. a vein of ore, esp one of gold-bearing quartz.
1. : to reduce the area of (a sail) by rolling or folding a portion. 2. : to lower or bring inboard (a spar) wholly or partially. intransitive verb. : to reduce a sail by taking in a reef. reefable. ˈrē-fə-bəl. adjective. reef. 3 of 3. noun (2) 1. a.
A reef is a raised area on the ocean floor that's made of rock, coral, or sand. If you are a scuba diver, head to a coral reef to check out the diverse marine life. A barrier reef is one that surrounds an island and creates a lagoon between the reef and the beach.
A reef is a long line of rocks or sand, the top of which is just above or just below the surface of the sea.
