Correct

封口

/ fēngkǒu /
Strokes

Definition

to close up/to heal (of wound)/to keep one's lips sealed

Example

As a Verb

seal sb's mouth; seal (off)

1
Yòng
jiāodài
胶带
de
kǒu
fēng
shàng

seal his mouth with tape

2
Méiyǒu
没有
fēngkǒu
封口
de
xìn

unsealed letter

As a Verb

close up; heal

3
shàng
de
shāng
jīng
已经
fēngkǒu
封口
le
  

The cut in his arm has closed up.

As a Verb

close a matter/an issue, leaving no room for further discussion

4
méi
fēngkǒu
封口
  
,
hái
可以
shāngliang
商量
  

He hasn't closed the issue/matter. It is still open to discussion.

As a Verb

buy silence