铁窗

Traditional form:

鐵窗

Pinyin (reading):

tiěchuāng

Definitions:

• window with an iron grating (apartment etc)
• barred window of a prison cell

Characters:

• 铁 - iron; strong, solid, firm
• 窗 - window

Traditional characters:

• 鐵 - iron; strong, solid, firm
• 窗 - window