Wabble

Part of speech: noun (n.)

A hobbling, unequal motion, as of a wheel unevenly hung; a staggering to and fro.

Part of speech: verb (v.)

To move staggeringly or unsteadily from one side to the other; to vacillate; to move the manner of a rotating disk when the axis of rotation is inclined to that of the disk; -- said of a turning or whirling body; as, a top wabbles; a buzz saw wabbles. wobble.