The noun 聚会 (jùhuì) means "gathering," "get-together," or "party." It refers to an event where people come together socially or for a specific purpose. For example, 举行聚会 means "to hold a gathering."
周末我们在朋友家办了一个小聚会。
zhōumò wǒmen zài péngyǒu jiā bàn le yī gè xiǎo jùhuì.
We held a small party at a friend's house over the weekend.
你来参加我的生日聚会吗?
nǐ lái cānjiā wǒ de shēngrì jùhuì ma?
Are you coming to my birthday party?
每年春节,家人都会举行一次大聚会。
měi nián chūnjié, jiārén dōu huì jǔxíng yī cì dà jùhuì.
Every year during Spring Festival, the family holds a big gathering.