ETYM Latin municipalis, from municipium a town, particularly in Italy, which possessed the right of Roman citizenship, but was governed by its own laws, a free town, from municeps an inhabitant of a free town, a free citizen.
1. Of or relating to the government of a municipality.
2. Relating or belonging to or characteristic of a municipality.

A security issued by a state or local government or by an authority set up by such a government — usually used in plural