waggle

Short definition from Wiktionary

Verb

1. 1
   To move (something) with short, quick motions; to wobble.
2. 2
   To quickly raise and lower in rapid succession, usually as an implication of slyness, smugness, or suggestiveness.
3. 3
   To reel, sway, or move from side to side; to move with a wagging motion; to waddle.

Noun

1. 1
   An instance of waggling.
2. 2
   A wobbling motion.
3. 3
   The preliminary swinging of the club head back and forth over the ball in the line of the proposed stroke.