an unmarried woman who attends the bride at a wedding
"As the only single friend in her bridal party, Sarah served as the bridesmaid alongside several married women."
A woman who attends a bride during her wedding ceremony, as part of the main wedding party.
"As my bridesmaid, Sarah helped me pick out every single accessory for my big day."
To act as a bridesmaid for; to attend a bride during her wedding ceremony.
"Sarah will be honored to serve as my maid of honor and stand by my side throughout the entire wedding day."