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: as, to wabble one's head.n. A rocking, unequal motion, as of a wheel unevenly hung or a top imperfectly balanced.n. 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.n. An old name of the great auk, Alca impennis. Josselyn, New England Rarities Discovered.