Alderman/ˈɔːldərmən/ Definition 1 of 2Pro Tip 1/3Local Government An alderman is a local government official, not used for national positions. She hopes to become an alderman to make changes in her community. Pro Tip 2/3Municipal Authority Aldermen are part of the municipal authority structure, dealing with city issues. The alderman proposed a new park for the city. Pro Tip 3/3Election Process Aldermen are usually elected by residents of the city wards they represent. Next month, residents will vote for a new alderman.