| 释义 |
reef
reef 1 R0111200 (rēf)n.1. A strip or ridge of rocks, sand, or coral that rises to or near the surface of a body of water.2. A vein of ore.3. Chiefly Western US A long craggy ridge or rocky escarpment.
[Obsolete Dutch rif, possibly from Old Norse, ridge.]
reef′y adj.
reef 2 R0111200 (rēf) Nautical n. A portion of a sail gathered in and secured to lessen the area exposed to the wind.tr.v. reefed, reef·ing, reefs 1. To reduce the size of (a sail) by gathering in a part and securing it, as by lashing it to a yard.2. To shorten (a topmast or bowsprit) by taking part of it in.
[Partly from Middle English rif (from Old Norse rif, from rīfa, to rive) and partly from Dutch and Low German reef (Low German, from Dutch), back-formation from Dutch reven, pl. of rif, reef (of a sail), from or akin to Old Norse rif.]reef (riːf) n1. (Geological Science) a ridge of rock, sand, coral, etc, the top of which lies close to the surface of the sea2. (Geological Science) a ridge- or mound-like structure built by sedentary calcareous organisms (esp corals) and consisting mainly of their remains3. (Mining & Quarrying) a vein of ore, esp one of gold-bearing quartz[C16: from Middle Dutch ref, from Old Norse rif rib1, reef2]
reef (riːf) nauticaln (Nautical Terms) the part gathered in when sail area is reduced, as in a high windvb1. (Nautical Terms) to reduce the area of (sail) by taking in a reef2. (Nautical Terms) (tr) to shorten or bring inboard (a spar)[C14: from Middle Dutch rif; related to Old Norse rif reef, rib1, German reffen to reef; see reef1]
Reef (riːf) n1. (Placename) another name for the Great Barrier Reef2. (Placename) another name for the Witwatersrandreef1 (rif)
n. 1. a ridge of rocks or sand, often of coral debris, at or near the surface of the water. 2. Mining. a lode or vein. [1575–85; earlier riff(e) < Dutch rif] reef2 (rif)
n. 1. a part of a sail that is rolled and tied down to reduce the area exposed to the wind. v.t. 2. to shorten (a sail) by tying in one or more reefs. 3. to reduce the length of (a topmast, a bowsprit, etc.). [1350–1400; Middle English refe (n.) < Dutch reef] reef (rēf) An irregular mass of rock or coral that rises up to or near the surface of a body of water. See more at coral reef.reef - From Old Norse rif, "rib."See also related terms for rib.reef
Past participle: reefed
Gerund: reefing
| Present |
|---|
| I reef | | you reef | | he/she/it reefs | | we reef | | you reef | | they reef |
| Preterite |
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| I reefed | | you reefed | | he/she/it reefed | | we reefed | | you reefed | | they reefed |
| Present Continuous |
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| I am reefing | | you are reefing | | he/she/it is reefing | | we are reefing | | you are reefing | | they are reefing |
| Present Perfect |
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| I have reefed | | you have reefed | | he/she/it has reefed | | we have reefed | | you have reefed | | they have reefed |
| Past Continuous |
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| I was reefing | | you were reefing | | he/she/it was reefing | | we were reefing | | you were reefing | | they were reefing |
| Past Perfect |
|---|
| I had reefed | | you had reefed | | he/she/it had reefed | | we had reefed | | you had reefed | | they had reefed |
| Future |
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| I will reef | | you will reef | | he/she/it will reef | | we will reef | | you will reef | | they will reef |
| Future Perfect |
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| I will have reefed | | you will have reefed | | he/she/it will have reefed | | we will have reefed | | you will have reefed | | they will have reefed |
| Future Continuous |
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| I will be reefing | | you will be reefing | | he/she/it will be reefing | | we will be reefing | | you will be reefing | | they will be reefing |
| Present Perfect Continuous |
|---|
| I have been reefing | | you have been reefing | | he/she/it has been reefing | | we have been reefing | | you have been reefing | | they have been reefing |
| Future Perfect Continuous |
|---|
| I will have been reefing | | you will have been reefing | | he/she/it will have been reefing | | we will have been reefing | | you will have been reefing | | they will have been reefing |
| Past Perfect Continuous |
|---|
| I had been reefing | | you had been reefing | | he/she/it had been reefing | | we had been reefing | | you had been reefing | | they had been reefing |
| Conditional |
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| I would reef | | you would reef | | he/she/it would reef | | we would reef | | you would reef | | they would reef |
| Past Conditional |
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| I would have reefed | | you would have reefed | | he/she/it would have reefed | | we would have reefed | | you would have reefed | | they would have reefed |
reefA ridge of rocks or coral that is usually submerged in the sea.Thesaurus| Noun | 1. |  reef - a submerged ridge of rock or coral near the surface of the watercoral reef - a reef consisting of coral consolidated into limestoneridge - a long narrow natural elevation or striation | | 2. | Reef - a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganeseWitwatersrand, RandTransvaal - a province of northeastern South Africa originally inhabited by Africans who spoke Bantu; colonized by the Boers | | 3. | reef - 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 windsail, canvass, canvas, sheet - a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vesselstrip, slip - artifact consisting of a narrow flat piece of material | | Verb | 1. | reef - lower and bring partially inboard; "reef the sailboat's mast"bring down, let down, lower, take down, get down - move something or somebody to a lower position; "take down the vase from the shelf" | | 2. | reef - roll up (a portion of a sail) in order to reduce its areafurl, roll up - form into a cylinder by rolling; "Roll up the cloth" | | 3. | reef - reduce (a sail) by taking in a reefshrink, reduce - reduce in size; reduce physically; "Hot water will shrink the sweater"; "Can you shrink this image?" |
reefnoun shoal, key, bar, shelf, spit, ridge, ledge, atoll, barrier reef An unspoilt coral reef encloses the bay.Translationsreef (riːf) noun a line of rocks etc just above or below the surface of the sea. The ship got stuck on a reef. 暗礁 暗礁
reef
reef the sail(s)To reduce the area of one or more sails while they are being used by winding them over a roller or tying them up at particular points. Often specified as "the mainsail," "the jib," etc. There's too much wind to be at full sail—it's dragging the whole boat to one side. I'll keep a steady course while you go and reef the mainsail. We should be fine if we just reef the jib, I think. The captain ordered us to reef the sails in before the storm hit.See also: reefreef in the sail(s)To reduce the area of one or more sails while they are being used by winding them over a roller or tying them up at particular points. There's too much wind to be at full sail—it's dragging the whole boat to one side. I'll keep a steady course while you go and reef in the mainsail. We should be fine if we just reef in the jib, I think. The captain ordered us to reef in the sails before the storm hit.See also: reefreeferslang Marijuana. I just found out my mom smokes reefer! Yo man, you got any reefer?reef a sail into reduce the area of a ship's sail, by folding the sail. The first mate ordered the sailors to reef the sails in. They had to reef in the sails.See also: reef, sailreefer (ˈrifɚ)1. n. a refrigerator. A new reefer costs nearly $1,000! 2. and reef n. cannabis; a marijuana cigarette. (Drugs. Akin to greefo.) He had a fat reef in his hand when he was busted. reef verbSee reeferreef
reef: see coral reefcoral reefs,
limestone formations produced by living organisms, found in shallow, tropical marine waters. In most reefs, the predominant organisms are stony corals, colonial cnidarians that secrete an exoskeleton of calcium carbonate (limestone).
..... Click the link for more information. .Reef a sharp underwater or above-water elevation in the sea floor in shallow water that hampers navigation. Reefs are formed either by the erosion of the bottom and coasts of the sea or by colonies of coral.
Reef a device for reducing sail area during a strong wind. The reef is usually a series of bands threaded through the sail, by means of which the sail is folded up when the boom or yard is taken up—that is, the sail is reefed, or taken in. Sails may have from one to four reefs. reef[rēf] (geology) A ridge- or moundlike layered sedimentary rock structure built almost exclusively by organisms. An offshore chain or range of rock or sand at or near the surface of the water. (mining engineering) A major ore trend or ore body. reef11. a ridge of rock, sand, coral, etc., the top of which lies close to the surface of the sea 2. a ridge- or mound-like structure built by sedentary calcareous organisms (esp corals) and consisting mainly of their remains
reef2 Nautical the part gathered in when sail area is reduced, as in a high wind reef
reef [rēf] an infolding or tuck of tissue, as a tuck made in plication.reef (rēf) A fold or tuck, usually taken in redundant tissue. REEF
| Acronym | Definition |
|---|
| REEF➣Reef Environmental Education Foundation | | REEF➣Renewable Energy Equity Fund (Australia) | | REEF➣Real Estate Equity Fund (ColumbusNova; Charlotte, NC) | | REEF➣Remedial Ecotoxicological Expeditions Fund | | REEF➣Real Estate Employers Federation (Australia) | | REEF➣Regression Estimation of Event Probabilities |
reef
Related to reef: billabongSynonyms for reefnoun shoalSynonyms- shoal
- key
- bar
- shelf
- spit
- ridge
- ledge
- atoll
- barrier reef
Words related to reefnoun a submerged ridge of rock or coral near the surface of the waterRelated Wordsnoun a rocky region in the southern Transvaal in northeastern South AfricaSynonymsRelated Wordsnoun 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 windRelated Words- sail
- canvass
- canvas
- sheet
- strip
- slip
verb lower and bring partially inboardRelated Words- bring down
- let down
- lower
- take down
- get down
verb roll up (a portion of a sail) in order to reduce its areaRelated Wordsverb reduce (a sail) by taking in a reefRelated Words |