noun (1) ˈmyül Synonyms of mule 1 a : a hybrid between a horse and a donkey especially : the offspring of a male donkey and a mare b : a self-sterile plant whether hybrid or not c : a usually sterile hybrid 2 : a very stubborn person 3 : a machine for simultaneously drawing and twisting fiber into yarn or thread and winding it into cops 4

Definitions and Meaning of mule driver in English mule driver noun. a worker who drives mules. Synonyms : mule skinner, muleteer, skinner