noun
evening hairdo; evening party hairstyle
A traditional Japanese updo worn for formal evening events, often associated with kimono attire.
結婚式のために夜会結びにしてもらった。
I had my hair done in an evening hairdo for the wedding.
夜会 means 'evening party' or 'soirée', while 夜会結び specifically refers to the hairstyle worn at such events.
Compound of 夜会 (evening party) and 結び (tying, knot), referring to a hairstyle tied up for formal evening occasions. The exact historical origin is uncertain, but it is associated with Western-influenced evening wear during the Meiji and Taisho periods.