This is the 2404th most frequent Chinese word.
回头
"回头" means "to turn around" or "later" depending on the context.
In this sentence, '回头' means 'later' or 'afterwards,' indicating a future time when the speaker will perform the action.
回头我再给你打电话。
I will call you back later.
Here, '回头' means 'to turn one's head to look back,' describing a physical movement.
他回头看了看我，然后继续向前走。
He turned his head to look back at me, then continued walking forward.
In this case, '回头' also has the sense of 'later,' referring to a future instance when the speaker will perform the action.