may·or 
(māər, mâr)
(māər, mâr)n.
The head of government of a city, town, borough, or municipal corporation.
[Middle English maire, from Old French, from Medieval Latin māior, from Latin, greater, superior; see meg- in the Appendix of Indo-European roots.]
mayor·al (māər-əl, mā-ôrəl) adj.
mayor·ship′ n.