出典:Wiktionary
出典:『Wiktionary』 (2026/05/05 16:07 UTC 版)
From earlier riff, from 中期英語 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.
From 中期英語 reef, from Old Norse rif, Middle Dutch rif, rēve, and/or Middle Low German ref. Possibly a figurative use of the word for “rib” in etymology 1 above, in which case all forms must, again, be borrowings from Old Norse. Alternatively it may be a different word related to 古期英語 rift (“curtain, veil”), ārāfian (“to uncoil, wind off”).
reef (third-person singular simple present reefs, present participle reefing, simple past and past participle reefed)
From 中期英語 ref, hreof, from 古期英語 hrēof (“rough, scabby, leprous", also "a leper”), from Proto-Germanic *hreubaz (“rough, scabby, scrubby”), from Proto-Indo-European *kreup- (“scab, crust”), related to 古期英語 hrēofla (“leprosy, leper”). Cognate with Scots reif (“a skin disease leaving crusts on the skin, the scab”), Old High German riob (“leprous, scabby, mangy”), Icelandic hrjúfur (“scabby, rough”). Compare riffe, dandruff.
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