reef
TOEFL礁・サンゴ礁
意味
- [暗]礁,岩礁,砂州(さす)
- 縮帆(しゅくはん)部(巻き上げて風を受ける面積を少なくした帆の部分)
- 〈帆〉を縮める
例文
How would you do a reef knot that is difficult to untie?
解けにくい固結びってどうやるの？
The ship was wrecked on a sunken reef.
船は暗礁に乗り上げて難破した。
語源
英語の原文（Wiktionary）
From earlier riff, from Middle English rif, from Old Norse rif (“rib, reef”), from Proto-Germanic *ribją (“rib, reef”), from Proto-Indo-European *h₁rebʰ- (“arch, ceiling, cover”). Dutch rif (“reef”), Low German riff, reff (“reef”), German Riff (“reef, ledge”) are also borrowed from Old Norse. Doublet of rib.