verb intrans
to move or move (something) to and fro, esp with quick jerky motions
said of the tongue: to move in chatter or gossip
to cause (something) to swing to and fro, esp with quick jerky motions
(often + at) to nod (the head) in disagreement, reproof, etc
(often + at) to shake (a finger) in mock or mild reproof
to move (e.g. the tongue) animatedly in conversation
[Middle English waggen, of Germanic origin]