a hybrid animal; specifically, one generated between an ass and a mare, sometimes a horse and a she-ass. see hinny.-a plant or vegetable produced by impregnating the pistil of one species with the pollen or fecundating dust of another; -- called also hybrid.-a very stubborn person.-a machine, used in factories, for spinning cotton, wool, etc., into yarn or thread and winding it into cops; -- called also jenny and mule-jenny.