HSK V2
Correct

点头

/ diǎntóu / 
Strokes

Definition

to nod

Example

As a Verb
nod (one's head)
1
Diǎntóu
点头
zhìyì
致意

nod a greeting (to sb); greet with a nod

2
Diǎntóu
点头
tóngyì
同意

nod one's agreement/approval/consent; nod approvingly

3
Diǎntóuchènshì
点头称是

nod and say yes

As a Verb
give one's consent
4
Zhǔrèn
主任
yǐjīng
已经
diǎntóu
点头
le
了
  
。

The director has already okayed it.