Correct

替角儿

/ tì juér / 
Strokes

Definition

erhua variant of 替角[tì jué]

Example

As a Noun

understudy

1
Tā
他
bìng
病
le
了
  
,
tā
他
de
的
tì
替
juérde
角儿
tì
得
tā
替
yǎn
他
chū  
演出
  
。

As he was ill, his understudy had to take his part.