Wabble

(wŏb'bl), v. i. [Prov. Ger. wabbeln, the same as quabbeln, schwabbeln, schwappeln, wackeln. Cf. QUAVER.] To move staggeringly from one side to the other; to vacillate; to move in the manner of a rotating disk when its plane vibrates from side to side;—said of a turning or whirling body; as, a top wabbles; a spindle wabbles.

n. A hobbling, unequal motion, as of a wheel unevenly hung.