黒慈姑

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Japanese

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Kanji in this term
くろ
Grade: 2
くわい > ぐわい
Grade: S Hyōgaiji
kun'yomi jukujikun
Alternative spelling
黑慈姑 (kyūjitai)
 クログワイ on Japanese Wikipedia

Etymology

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Literally, black arrowhead, (くろ) (kuro, black) + 慈姑(くわい) (kuwai, arrowhead). The kuwai changes to guwai as an instance of rendaku (連濁).

Noun

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(くろ)慈姑(ぐわい) or 黒慈姑(クログワイ) (kuroguwai

  1. Eleocharis kuroguwai, a kind of spikerush

Usage notes

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As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).