1.N-COUNT; N-TITLE 可数名词；头衔名词（美国和加拿大部分地区的）市政委员会委员 In some parts of the United States and Canada, an alderman is a member of the governing body of a city.

2.N-COUNT; N-TITLE 可数名词；头衔名词（1974年以前英格兰和威尔士的）高级市政官 Until 1974 in England and Wales, an alderman was a senior member of a local council who was elected by other councillors.