wag·gle /ˈwægəl/
  (vt.)(vi.)搖動,搖擺搖動,搖擺
  Wag·gle v. i.  To reel, sway, or move from side to side; to move with a wagging motion; to waddle.
     Why do you go nodding and waggling so?   --L'Estrange.
  Wag·gle, v. t. [imp. & p. p. Waggled p. pr. & vb. n. Waggling ] To move frequently one way and the other; to wag; as, a bird waggles his tail.
  Wag·gle n. A waggling or wagging; specif. Golf, the preliminary swinging of the club head back and forth over the ball in the line of the proposed stroke.
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  waggle
       n : causing to move repeatedly from side to side [syn: wag, shake]
       v 1: move from side to side; "The happy dog wagged his tail"
            [syn: wag]
       2: move unsteadily or with a weaving or rolling motion [syn: wamble]