convener
/kənˈviːnə(r)/(亦作 convenor)
noun
1- a person whose job it is to call people together for meetings of a committee（委员会会议的）召集人。
1.1
- Brit. a senior trade union official at a workplace〈英〉（工作场所的）工会高级官员。
1.2
- the chairman and civic head of some regional Scottish councils（苏格兰某些地区政务委员会的）主席和市政领导。