ノミの心臓 (nominoshinzou) Japanese meaning: timidity | Kotomoraノミの心臓の私には、ホラー映画は無理だ。
With my cowardly nature, horror movies are impossible for me.
Written forms
ノミの心臓
Common katakana-kanji mixed spelling for the idiomatic expression.
蚤の心臓
Kanji spelling using 蚤 for flea; less common but still encountered.
Etymology
Literally 'a flea's heart', an idiomatic expression comparing a person's courage to the tiny heart of a flea, implying extreme timidity.
