铁 + Noun
The noun 铁 (tiě) means "iron" in Chinese, referring to the metal element. It can also be used figuratively to describe something strong, firm, or unyielding. It appears in many compound words and expressions in Chinese.
这把刀是用铁做的。
Zhè bǎ dāo shì yòng tiě zuò de.
This knife is made of iron.
铁是建筑中常用的材料。
Tiě shì jiànzhù zhōng chángyòng de cáiliào.
Iron is a commonly used material in construction.
那座桥的栏杆都是铁的。
Nà zuò qiáo de lángān dōu shì tiě de.
The railings of that bridge are all made of iron.