The act of bowing the head.

(常用单数)点头。

A quick inclination of the head.

颔首。

Inclining the head as a sign of authority.

点头示意；命令。

A hanging downward or bending forward, as of the top of a tree, flowers, etc.

(树枝，花枝之)低垂；弯曲。

To incline or bend the top with a quick, forward motion.

顶部低垂。

To bend the head in token of assent or as a salute.

颔首示诺；颔首为礼。

To be drowsy; bend the head f

orward sleepily.

打盹；瞌睡。

To make an error because of momentary abstraction.

一时不当心犯错。