Pronunciation: (ôl'dur-mun),[key] —n., —pl.-men. 1. a member of a municipal legislative body, esp. of a municipal council.
2. (in England) one of the members, chosen by the elected councilors, in a borough or county council.
3. Early Eng. Hist. a. a chief.
b. (later) the chief magistrate of a county or group of counties.
4. Northern U.S. Slang.a pot belly.