1. [verb] (transitive and intransitive) To incline the head up and down, as to indicate agreement.
2. [verb] (transitive and intransitive) To sway, move up and down.
3. [verb] (intransitive) To gradually fall asleep.
4. [verb] (intransitive) To make a mistake by being temporarily inattentive or tired
5. [verb] (intransitive) (soccer) To head; to strike the ball with one's head.
6. [verb] (intransitive) (figuratively) To allude to something.
7. [verb] (intransitive) (slang) To fall asleep while under the influence of opiates.
8. [noun] An instance of moving one's head as described above.
9. [noun] A reference or allusion to something.
10. [noun] A sign of assent or salutation or command.
11. [noun] The act of nodding the head.
12. [verb] Express or signify by nodding; 'He nodded his approval'.
13. [verb] Lower and raise the head, as to indicate assent or agreement or confirmation; 'The teacher nodded when the student gave the right answer'.
14. [verb] Let the head fall forward through drowsiness; 'The old man was nodding in his chair'.
15. [verb] Sway gently back and forth, as in a nodding motion; 'the flowers were nodding in the breeze'.
16. [verb] Be almost asleep; 'The old man sat nodding by the fireplace'.
