groomsman
noun [ C ] mainly US uk/ˈɡruːmz.mən/ us/ˈɡruːmz.mən/ groomsmen /ˈɡruːmz.mən/ /ˈɡruːmz.mən/ (UK usually usher)
男傧相，伴郎
a friend of a man who is getting married who has special duties at the wedding including showing people to their seats