subs. (colloquial).1. An obstinate person, male or female.
1891. W. C. RUSSELL, An Ocean Tragedy, 131. I saw that he was a MULE of a man.
2. (colloquial).An impotent man.
3. (printers).A day hand in the composing-room.
TO SHOE ONES MULE, verb. phr. (old).To embezzle.
1655. History of Francion [NARES]. He had the keeping and disposall of the moneys, and yet SHOD NOT HIS MULE at all.