at a wedding (= a ceremony at which two people get married), a married woman who helps the woman who is getting married

The groom ended his speech by thanking the bridesmaids and matron of honour. 新郎在致辞结束时感谢了伴娘团和主伴娘。

The Matron of Honour didn't turn up to the wedding because she was ill. 主伴娘因为生病而未参加婚礼。

See also: attendant nounbest manbridesmaidflower girlgroomsmanmaid of honourpageboyring bearerusher