磨穿鉄硯

Japanese
Kanji in this term
磨 穿 鉄 硯
ま
Grade: S		 せん
Jinmeiyō		 てつ > てっ
Grade: 3		 けん
Jinmeiyō
on’yomi

Noun

磨穿鉄硯(ませんてっけん) • (masentekken) 

  1. showing unyielding diligence in one's studies; wearing a hole through one's metal inkstone from constant studying
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