nod

Noun

• the act of nodding the head

• a sign of assent or salutation or command

Verb

• be almost asleep
  • The old man sat nodding by the fireplace
    

• sway gently back and forth, as in a nodding motion
  • the flowers were nodding in the breeze
    

• let the head fall forward through drowsiness
  • The old man was nodding in his chair
    

• lower and raise the head, as to indicate assent or agreement or confirmation
  • The teacher nodded when the student gave the right answer
    

• express or signify by nodding
  • He nodded his approval