鉄心 てっしん Meanings Noun iron core; iron will Kanji 鉄 iron. Read as テツ. 心 heart. Read as シン. Words containing 鉄心 鉄心石腸 (てっしんせきちょう) will of iron 環状鉄心 (かんじょうてっしん) toroidal core Jinuma: Japanese Dictionary · Word lists