JMdict: 1779540

鉄心 【てっしん】

  1. [n] iron core; iron will
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
鉄 Iron テツ くろがね 3
心 Heart, Mind, Spirit, Heart Radical (no. 61) シン こころ, -ごころ 2