糸爪
  いとづめ
  noun (common) (futsuumeishi)
  see: 糸道・いとみち・1
  groove in a shamisen player's fingernail caused by the friction of the string of the instrument
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  糸瓜
  天糸瓜
  糸爪
  word containing irregular kanji usage
  へちま
  gikun (meaning) reading
  ヘチマ
  noun (common) (futsuumeishi)
  word usually written using kana alone
  sponge gourd
  dishcloth gourd
  loofah
  word usually written using kana alone
  sponge cucumber
  word usually written using kana alone
  [metaphorically, generally in negative sentences]
  something useless
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