Correct

石膏

/ shígāo / 
Strokes

Definition

gypsum CaSO4·2(H2O)/plaster/plaster cast (for a broken bone)

Example

As a Noun

gypsum; plaster stone

1
Tā
他
de
的
zuǒ
左
xīgài
膝盖
shàng
上
le
了
bàn
半
nián
年
de
的
shígāo
石膏
  
。

His left knee was in plaster for six months.

2
Tuǐ
腿
shàng
上
shàng
上
le
了
shígāo
石膏

have a plaster cast on one's leg

3
Shígāo
石膏
kuàngchuáng
矿床

gypsum deposit