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reef 中文解釋 wordnet sense Collocation Usage Collins Definition
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reefs, plural;
  1. Take in one or more reefs of (a sail)
    • - reefing the mainsail in strong winds
  1. Each of the several strips across a sail that can be taken in or rolled up to reduce the area exposed to the wind

  1. a submerged ridge of rock or coral near the surface of the water
  2. lower and bring partially inboard; "reef the sailboat's mast"
  3. roll up (a portion of a sail) in order to reduce its area
  4. Witwatersrand: a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese
  5. one of several strips across a sail that can be taken in or rolled up to lessen the area of the sail that is exposed to the wind
  6. reduce (a sail) by taking in a reef
  7. In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water (six fathoms or less at low water).
  8. Reef are an English band from Glastonbury. The band members included Gary Stringer on vocals, Kenwyn House on guitar, Jack Bessant on bass and Dominic Greensmith on drums. Their second album, Glow, is ranked at number 26 in Kerrang!'s "100 Albums You Must Hear Before You Die" list.
  9. Reef sandals are a brand of casual sandals, known as flip-flops. Two Argentine brothers, Fernando and Santiago Aguerre, created their brand in the 1980s to support their active lifestyles. Their involvement in the surfing scene led them to open their own surf shop in Argentina in the 1970s. ...
  10. The reef knot or square knot is an ancient and simple binding knot used to secure a rope or line around an object. Although the reef knot is often seen used for tying two ropes together, it is not recommended for this purpose due to potential instability of the knot.
  11. Reefing is a sailing manoeuvre intended to reduce the area of a sail on a sailboat or sailing ship, which can improve the ship's stability and reduce the risk of capsizing, broaching, or damaging sails or boat hardware in a strong wind. ...
  12. The Reef (also known as Passion's Way) is a 1999 historical drama film directed by Robert Allan Ackerman based on the book by Edith Wharton. It starred Sela Ward, Timothy Dalton, Alicia Witt, Jamie Glover. It was filmed in Prague, Czech Republic in 1996 but did not premiere on CBS until July 1999.
  13. (REEFS) Any submarine or tidal rocks which are hazardous
  14. A series of techniques used to gather the shroud lines of a parachute together to prevent it from fully opening. This is usually done on rockets that reach extreme altitudes or launched on windy days which need higher sink rates to help them land near the launcher. ...
  15. A metallic mineral deposit, especially gold-bearing, commonly in a sedimentary rock.
  16. A rocky elevation of the seafloor whose upper part is at depths of less than about 20 m and that poses a hazard to navigation.*
  17. a massive moundlike structure, built by calcareous organisms, especially corals, sponges and calcareous algae. It is a wave-resistant body standing above the surrounding sediments
  18. A geologically discrete horizon where PGM mineralization is concentrated.
  19. A gold-bearing sedimentary horizon, normally a conglomerate band that may contain economic levels of gold.
  20. Old miners' name for a gold-bearing zone, usually a gold-bearing quartz vein.
  21. Making the sails smaller in strong winds.
  22. A chain of rocks, often coral, lying near the water surface. Sometimes ships bump into coral reefs in the ocean.
  23. A ridge of rocks, sand or gravel that stands above the level of the sea floor and reaches to the surface; many modern reefs consist of the hard skeletons of corals and fossil reefs have been formed by corals, archeocyathids and algae.
  24. (1) a line of submerged rocks; (2) a tuck taken in a sail to reduce its area.
  25. reduce the sail area by folding or rolling surplus material on the boom or forestay.