noun
farewell party; goodbye gathering
A social event held to say goodbye to someone who is leaving, such as a colleague transferring or a friend moving away.
来週、転勤する田中さんの別れ会を開きます。
Next week we'll hold a farewell party for Mr. Tanaka, who is being transferred.
Compound of 別れ (wakare, 'farewell, parting') and 会 (kai, 'gathering, meeting').