Vocab Info
Unclassified Noun
磨穿鉄硯showing unyielding diligence in one's studies, wearing a hole through one's metal inkstone from constant studying
Dictionary Definition
Noun
1.
showing unyielding diligence in one's studies, wearing a hole through one's metal inkstone from constant studying
Yojijukugo
All Forms
磨穿鉄硯 【ませんてっけん】
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