| 单词 | reef |
| 释义 | Word Frequency reef 1(riːf) noun 1. 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 3. a vein of ore, esp one of gold-bearing quartz Word origin C16: from Middle Dutch ref, from Old Norse rif rib1, reef2Word Frequency reef 2(riːf) nautical noun 1. the part gathered in when sail area is reduced, as in a high wind verb 2. to reduce the area of (sail) by taking in a reef 3. (transitive) to shorten or bring inboard (a spar) Word origin C14: from Middle Dutch rif; related to Old Norse rif reef, rib1, German reffen to reef; see reef1Word Frequency Reef(riːf) noun the Reef 1. another name for the Great Barrier Reef 2. another name for the Witwatersrand |
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