Hizzoner

Proper noun

 * , the mayor, especially of a large city.
 * 1) * 1930, John Bright, Hizzoner Big Bill Thompson: An Idyll of Chicago, [book title].

Usage notes
Cities in which the mayor is often called "Hizzoner" include Chicago, Las Vegas, Los Angeles, Newark, New Orleans, New York City, and Philadelphia. The term can, but not always, connote a sense of "hardball" common to American urban politics.