This Kanji has some meanings. It literally means “iron core” and we can use it as this meaning.
However, it metaphors “strong heart”. I will explain the reason below.
鉄(tetsu)= It simply means “iron”. But this Kanji use in a lot of situation for expressing strength.
Because Iron is symbol as toughness in Japan.
On the other hand,
心(shin)= It implies “heart” when used alone. Sometimes it expresses “center of something”.
Finally
鉄心(tetsu-shin)= It means solid preparedness.
If you are interested in these Kanji, you may simply copy them from this website and use them as you please. Make them yours!
