nod

fe’l verb

1. To signify by a nod. They nodded their assent.
2. To head; to strike the ball with one's head. Jones nods the ball back to his goalkeeper.
3. To incline the head up and down, as to indicate agreement.
4. To briefly incline the head downwards as a cursory greeting.

ot noun

1. A nomination. For the fifth time in her career she received a Grammy nod, she has yet to win the award.
2. Approval. The plan is expected to get the nod from councillors at the next meeting.
3. An instance of inclining the head up and down, as to indicate agreement, or as a cursory greeting.
4. A reference or allusion to something.