Answer: nodder

AnswerCrossword Clue
NODDERBobbing-head doll
NODDERDrowsy one, perhaps
NODDEROne showing approval
NODDERDrowsy one
NODDERYes-man, perhaps
NODDEROne placing auction bids
nodderto become sleepy
nodderto sway gently
nodderone that nods (to give a quick forward motion of the head)
nodderto incline (the head) briefly
nodderbrief inclination of the head