Correct

缝子

/ fèngzi / 
Strokes

Definition

crack/chink/narrow slit/crevice

Example

As a Noun

chink; crack; crevice

1
Qiáng
墙
liè
裂
le
了
dào
道
fèngzi
缝子
  
。

There is a crack in the wall.

2
Fèngzi
缝子
kāi
开
le
了
  
。

The seam has split.

3
Chāikāi
拆开
fèngzi
缝子

undo the seam

4
Bēng
绷
kāi
开
fèngzi
缝子

burst at the seam