a sign of assent or salutation or command

the act of nodding the head

express or signify by nodding; He nodded his approval'

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

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

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

be almost asleep; The old man sat nodding by the fireplace'