| 单词 | reef |
| 释义 | reef 1. n. 1. a ridge of rock or coral etc. at or near the surface of the sea. 2. a a lode of ore. b the bedrock surrounding this. Etymology: earlier riff(e) f. MDu., MLG rif, ref, f. ON rif RIB 2. n. & v. Naut. --n each of several strips across a sail, for taking it in or rolling it up to reduce the surface area in a high wind. --vtr. 1. take in a reef or reefs of (a sail). 2. shorten (a topmast or a bowsprit). Phrases and idioms reefing-jacket a thick close-fitting double-breasted jacket. reef-knot a double knot made symmetrically to hold securely and cast off easily. reef-point each of several short pieces of rope attached to a sail to secure it when reefed. Etymology: ME riff, refe f. Du. reef, rif f. ON rif RIB, in the same sense: cf. REEF(1) |
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