intransitive verb
Definition: To move your head up and down, often to show agreement or to indicate that you are sleepy.
Example: She nodded in agreement when asked if she wanted to go to the party.
noun
Definition: A movement of the head up and down, often used to show agreement or acknowledgment.
Example: She gave a nod to show that she understood the instructions.
transitive verb
Definition: To move the head up and down quickly to show agreement or to signal someone to come or go.
Example: She nodded her head to show that she understood the instructions.