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ノミの心臓、蚤の心臓 のみのしんぞう nominoshinzou

JMdict entry #2850091

  1. expressions (phrases, clauses, etc.)noun (common) (futsuumeishi) idiomatic expression timidity; cowardice; courage of a flea

Kanji in this word

heart, mind, spirit
entrails, viscera, bowels

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