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1. Lower and raise the head, as to indicate assent, agreement or confirmation
   "The teacher nodded when the student gave the right answer"
    
2. Express or signify by nodding
   "He nodded his approval"
    
3. Let the head fall forward through drowsiness
   "The old man was nodding in his chair"
    
4. Sway gently back and forth, as in a nodding motion
   "the flowers were nodding in the breeze"
    
5. Be almost asleep
   "The old man sat nodding by the fireplace"

1. A sign of assent, salutation or command
    
2. The act of nodding the head

Derived forms: nods, nodding, nodded

Type of: communicate, drowse, gesticulate, gesture, inclination, inclining, intercommunicate, motion, move

Encyclopedia: Nod