nod
v.v. to move your head up and down to say yes or to show you agree. You also use it as a quick way to say hello to someone you see.
v. to lower and raise the head slightly and briefly to indicate agreement, acknowledgement, or greeting. Often used as a non-verbal signal in social or professional settings.
She gave a quick nod to show she understood the instructions.
When the manager asked if everyone was ready to start, the team members simply nodded in unison.
The witness gave a slight nod toward the defendant, confirming the identification without uttering a single word to the court.
The verb is usually intransitive but can take a direct object when referring to the head itself ('nod your head').
He nodded me across the street.He nodded at me across the street.When directing the action toward a person, the verb usually requires the preposition 'at'.