wabble

A rocking, unequal motion, as of a wheel unevenly hung or a top imperfectly balanced.

To incline to the one side and to the other alternately, as a wheel, top, spindle, or other rotating body when not properly balanced; move in the manner of a rotating disk when its plane vibrates from side to side; rock; vacillate.

Hence To vacillate, vibrate, tremble, or exhibit unevenness, in senses other than mechanical.

To cause to wabble.

The larva of the emasculating bot-fly, Cutiterebra emasculator, which infests squirrels in the United States; also, the injury or affection resulting from its presence. See warble, and cut under Cutiterebra. Also worble.