The kanji 鉄 primarily means "iron." It represents the metallic element iron, known for its strength, durability, and use in various applications.

・On-yomi (音読み): テツ ・Kun-yomi (訓読み): くろがね

⚫︎鉄道 (てつどう) Translation: Railway; railroad. ⚫︎鉄鋼 (てっこう) Translation: Steel; iron and steel. ⚫︎鉄分 (てつぶん) Translation: Iron content.

The kanji 鉄鉄 is a phono-semantic compound (形声文字 - けいせいいもじ). ⚫︎The semantic component is 钅(金) - かね meaning "metal." This component provides the meaning context, indicating that 鉄鉄 relates to a metal. ⚫︎The phonetic component is 失 - しつ which provides the sound element テツ. This combination suggests a metal with properties similar to "loss" or "neglect" in old Chinese. This is because iron was considered less valuable than gold or silver in ancient times.