celebratory banquet; feast
A formal or literary term for a banquet held to celebrate a happy occasion, such as a wedding or anniversary.
A grand celebratory banquet was held for the wedding.
Compound of 賀 (が, 'congratulation') and 宴 (えん, 'banquet'). The exact historical derivation is uncertain, but the kanji combination directly conveys the meaning of a celebratory feast.